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Localhost:8080, showing 404 Error in Spring Boot Application

I am having some issues in regards to my spring boot microservice, I have been able to successfully connect my microservice to my SQL instance running on Google Cloud, but for some reason when I try to test if the controllers are working using a sample endpoint which simply returns a String "Working" I get a 404 not found error, I have also tried a sample blank project, with no dependency except the ones needed to get Spring Boot up and running, however I still face the same problem, that is I get a 404 Not Found error, even though it is properly compiling and running. I have checked my firewall and it has not blocked the service.
Here is the Controller
VideoController.java
package com.example.demo.Controllers;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class VideoController {
#RequestMapping(path = "/test")
public String index() {
return "Greetings from Spring Boot!";
}
}
Run Logs
2021-07-11 16:53:28.677 INFO 16456 --- [ main] com.example.demo.Run.DemoApplication : Starting DemoApplication using Java 15.0.2 on DESKTOP-OO1339O with PID 16456 (C:\Users\Engineering\IdeaProjects\gcp-demo\build\classes\java\main started by Engineering in C:\Users\Engineering\IdeaProjects\gcp-demo)
2021-07-11 16:53:28.679 INFO 16456 --- [ main] com.example.demo.Run.DemoApplication : No active profile set, falling back to default profiles: default
2021-07-11 16:53:29.149 INFO 16456 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2021-07-11 16:53:29.161 INFO 16456 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 5 ms. Found 0 JPA repository interfaces.
2021-07-11 16:53:29.510 INFO 16456 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2021-07-11 16:53:29.517 INFO 16456 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-07-11 16:53:29.517 INFO 16456 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.48]
2021-07-11 16:53:29.624 INFO 16456 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2021-07-11 16:53:29.625 INFO 16456 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 913 ms
2021-07-11 16:53:29.751 INFO 16456 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2021-07-11 16:53:29.788 INFO 16456 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.32.Final
2021-07-11 16:53:29.888 INFO 16456 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
2021-07-11 16:53:29.971 INFO 16456 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2021-07-11 16:53:30.025 INFO 16456 --- [ main] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:30.025 INFO 16456 --- [ main] c.g.cloud.sql.core.CoreSocketFactory : First Cloud SQL connection, generating RSA key pair.
2021-07-11 16:53:31.820 INFO 16456 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2021-07-11 16:53:31.835 INFO 16456 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL57Dialect
2021-07-11 16:53:31.924 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:32.035 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:32.040 INFO 16456 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2021-07-11 16:53:32.049 INFO 16456 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2021-07-11 16:53:32.099 WARN 16456 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2021-07-11 16:53:32.147 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:32.245 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:32.265 INFO 16456 --- [ main] c.g.c.s.core.DefaultCredentialsProvider : Default credentials provider for service account acn-demo-app#involuted-earth-319307.iam.gserviceaccount.com
2021-07-11 16:53:32.265 INFO 16456 --- [ main] c.g.c.s.core.DefaultCredentialsProvider : Scopes in use by default credentials: [https://www.googleapis.com/auth/pubsub, https://www.googleapis.com/auth/spanner.admin, https://www.googleapis.com/auth/spanner.data, https://www.googleapis.com/auth/datastore, https://www.googleapis.com/auth/sqlservice.admin, https://www.googleapis.com/auth/devstorage.read_only, https://www.googleapis.com/auth/devstorage.read_write, https://www.googleapis.com/auth/cloudruntimeconfig, https://www.googleapis.com/auth/trace.append, https://www.googleapis.com/auth/cloud-platform, https://www.googleapis.com/auth/cloud-vision, https://www.googleapis.com/auth/bigquery, https://www.googleapis.com/auth/monitoring.write]
2021-07-11 16:53:32.277 INFO 16456 --- [ main] c.g.c.s.a.c.GcpContextAutoConfiguration : The default project ID is XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST
2021-07-11 16:53:32.353 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:32.378 INFO 16456 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2021-07-11 16:53:32.389 INFO 16456 --- [ main] com.example.demo.Run.DemoApplication : Started DemoApplication in 4.027 seconds (JVM running for 4.567)
2021-07-11 16:53:32.449 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:32.554 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:32.659 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [involuted-earth-319307:australia-southeast1:cloud-demo] via SSL socket.
2021-07-11 16:53:32.768 INFO 16456 --- [onnection adder] c.g.cloud.sql.core.CoreSocketFactory : Connecting to Cloud SQL instance [XXXXXXXXHIDDENFROMSTACKOVERFLOWPOST] via SSL socket.
2021-07-11 16:53:38.167 INFO 16456 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2021-07-11 16:53:38.167 INFO 16456 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2021-07-11 16:53:38.168 INFO 16456 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 1 ms
My Application Properties File
Application.properties
spring.main.allow-bean-definition-overriding=true
spring.datasource.url=SOMEVALUE HERE
spring.datasource.username=SOMEVALUE HERE
spring.datasource.password=SOMEVALUEHERE
spring.cloud.gcp.sql.database-name=SOMEVALUEHERE
spring.cloud.gcp.sql.instance-connection-name=SOMVEVALUEHERE
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
My File Structure
My Application Run Class
DemoApplication.Java
package com.example.demo.Run;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}

DemoApplication is in the com.example.demo.Run package. This means that its component scanning, enabled via #SpringBootApplication, will find components in com.example.demo.Run and in any sub-packages such as com.example.demo.Run.example. The rest of your code, therefore, isn’t in a package where it’ll be found.
I would fix this by moving DemoApplication up into the com.example.demo package. This will mean that components in any of your existing com.example.demo.* packages is found.
Alternatively, you could leave DemoApplication where it is and use the scanBasePackages attribute on #SpringBootApplication to list all your other com.example.demo.* packages. This will be more verbose than moving DemoApplication and would require changes every time you introduce a new package.

As you said your first problem was because of the package level of your main class and Controller class. But the second problem does not seem to depend on refactoring the main class. It's related to conflict of the version of your JDK or another library

Kafka configuration not loaded from Spring config server in spring boot

I have microservice projects access to a common config server. However the configuration for the Eugene client is working, but for the apache Kafka not working.
Spring Config server
#SpringBootApplication
#EnableEurekaClient
#EnableConfigServer
public class FeteBirdConfigurationServerApplication {
public static void main(String[] args) {
SpringApplication.run(FeteBirdConfigurationServerApplication.class, args);
}
}
bootstrap.yml
spring:
cloud:
config:
server:
git:
uri: https://github.com/anandjaisy/Microservice-Cloud-Config
Config server
spring:
application:
name: CONFIG-SERVER
server:
port: 8085
Git Repo
eureka:
client:
register-with-eureka: true
fetch-registry: true
service-url:
defaultZone: http://localhost:8761/eureka/
instance:
hostname: localhost
spring:
kafka:
producer:
value-serializer: org.springframework.kafka.support.serializer.JsonSerializer
Micoservice accessing config server
bootstrap.yml
spring:
cloud:
config:
uri:
- http://localhost:8085
If I put Kafka config in the microservice application.yml file the configuration works, but if I remove and try to access the config server it is not working.
spring:
application:
name: ORDER-SERVICE
kafka:
producer:
value-serializer: org.springframework.kafka.support.serializer.JsonSerializer
Logs from the microservice
2020-07-13 15:11:08.441 INFO 2025 --- [ restartedMain] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8085
2020-07-13 15:11:08.992 INFO 2025 --- [ restartedMain] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8085. Will be trying the next url if available
2020-07-13 15:11:08.999 WARN 2025 --- [ restartedMain] c.c.c.ConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8085/ORDER-SERVICE/dev": Connection refused; nested exception is java.net.ConnectException: Connection refused
2020-07-13 15:11:09.004 INFO 2025 --- [ restartedMain] f.b.f.FeteBirdOrderApplication : The following profiles are active: dev
2020-07-13 15:11:17.529 WARN 2025 --- [ restartedMain] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format.
2020-07-13 15:11:18.328 INFO 2025 --- [ restartedMain] o.s.cloud.context.scope.GenericScope : BeanFactory id=0bb24ffe-2fc1-3960-867f-4b6e7735d255
2020-07-13 15:11:20.952 INFO 2025 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8081 (http)
2020-07-13 15:11:21.095 INFO 2025 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-07-13 15:11:21.096 INFO 2025 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.36]
2020-07-13 15:11:21.612 INFO 2025 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-07-13 15:11:21.613 INFO 2025 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 12525 ms
2020-07-13 15:11:22.495 WARN 2025 --- [ restartedMain] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources.
2020-07-13 15:11:22.495 INFO 2025 --- [ restartedMain] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-07-13 15:11:22.541 INFO 2025 --- [ restartedMain] c.netflix.config.DynamicPropertyFactory : DynamicPropertyFactory is initialized with configuration sources: com.netflix.config.ConcurrentCompositeConfiguration#59982a7
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils (file:/Users/macbook/.gradle/caches/modules-2/files-2.1/org.springframework/spring-core/5.2.7.RELEASE/56e14a3a5e2813534b5db2da1502cd58ab5bc61d/spring-core-5.2.7.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
2020-07-13 15:11:31.448 INFO 2025 --- [ restartedMain] o.s.b.a.e.web.EndpointLinksResolver : Exposing 17 endpoint(s) beneath base path '/actuator'
2020-07-13 15:11:32.508 WARN 2025 --- [ restartedMain] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources.
2020-07-13 15:11:32.508 INFO 2025 --- [ restartedMain] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-07-13 15:11:32.931 INFO 2025 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-07-13 15:11:33.094 WARN 2025 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : Unable to start LiveReload server
2020-07-13 15:11:34.161 WARN 2025 --- [ restartedMain] ockingLoadBalancerClientRibbonWarnLogger : You already have RibbonLoadBalancerClient on your classpath. It will be used by default. As Spring Cloud Ribbon is in maintenance mode. We recommend switching to BlockingLoadBalancerClient instead. In order to use it, set the value of `spring.cloud.loadbalancer.ribbon.enabled` to `false` or remove spring-cloud-starter-netflix-ribbon from your project.

Spring Boot War Deployment on Tomcat not working

I deployed a springboot application package in WAR format. But I am not seeing the spring related logs in my console. Also, I cannot see the application running. What could be the possible reason? I am attaching the tomcat logs herewith. Thanks in advance
2020-07-02 17:22:17.744 INFO 17952 --- [ost-startStop-1] c.s.narayaneeyam.ServletInitializer : Starting ServletInitializer v0.0.1-SNAPSHOT on DESKTOP-PB6GB90 with PID 17952 (D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\narayaneeyam-0.0.1-SNAPSHOT\WEB-INF\classes started by sachi in D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\bin)
2020-07-02 17:22:17.754 INFO 17952 --- [ost-startStop-1] c.s.narayaneeyam.ServletInitializer : No active profile set, falling back to default profiles: default
2020-07-02 17:22:20.982 INFO 17952 --- [ost-startStop-1] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFERRED mode.
2020-07-02 17:22:21.248 INFO 17952 --- [ost-startStop-1] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 227ms. Found 4 JPA repository interfaces.
2020-07-02 17:22:22.688 INFO 17952 --- [ost-startStop-1] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 4795 ms
2020-07-02 17:22:23.760 INFO 17952 --- [ost-startStop-1] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-07-02 17:22:23.944 INFO 17952 --- [ task-1] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-07-02 17:22:24.042 WARN 17952 --- [ost-startStop-1] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2020-07-02 17:22:24.172 INFO 17952 --- [ost-startStop-1] .s.s.UserDetailsServiceAutoConfiguration :
Using generated security password: 3c2c7634-78d3-4015-ab8e-c9a6c99c4b3b
2020-07-02 17:22:24.288 INFO 17952 --- [ task-1] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.17.Final
2020-07-02 17:22:25.162 INFO 17952 --- [ task-1] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-07-02 17:22:25.745 INFO 17952 --- [ task-1] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2020-07-02 17:22:26.474 INFO 17952 --- [ task-1] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2020-07-02 17:22:26.573 INFO 17952 --- [ task-1] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect
2020-07-02 17:22:26.621 INFO 17952 --- [ost-startStop-1] o.s.s.web.DefaultSecurityFilterChain : Creating filter chain: any request, [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter#2e78fc6, org.springframework.security.web.context.SecurityContextPersistenceFilter#5adbbfc, org.springframework.security.web.header.HeaderWriterFilter#5e4ef05f, org.springframework.security.web.csrf.CsrfFilter#6f946b3c, org.springframework.security.web.authentication.logout.LogoutFilter#61bb46d, org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter#5dcf9e1a, org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter#5a5ac80e, org.springframework.security.web.authentication.ui.DefaultLogoutPageGeneratingFilter#4fb155f8, org.springframework.security.web.savedrequest.RequestCacheAwareFilter#54779eb2, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter#39715673, org.springframework.security.web.authentication.AnonymousAuthenticationFilter#6708ba7c, org.springframework.security.web.session.SessionManagementFilter#53fa3c7e, org.springframework.security.web.access.ExceptionTranslationFilter#e50c54, org.springframework.security.web.access.intercept.FilterSecurityInterceptor#50b9a845]
2020-07-02 17:22:29.827 INFO 17952 --- [ task-1] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2020-07-02 17:22:29.865 INFO 17952 --- [ task-1] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2020-07-02 17:22:29.994 INFO 17952 --- [ost-startStop-1] o.s.b.a.e.web.EndpointLinksResolver : Exposing 2 endpoint(s) beneath base path '/actuator'
2020-07-02 17:22:30.060 INFO 17952 --- [ost-startStop-1] DeferredRepositoryInitializationListener : Triggering deferred initialization of Spring Data repositoriesà
2020-07-02 17:22:31.170 INFO 17952 --- [ost-startStop-1] DeferredRepositoryInitializationListener : Spring Data repositories initialized!
2020-07-02 17:22:31.187 INFO 17952 --- [ost-startStop-1] c.s.narayaneeyam.ServletInitializer : Started ServletInitializer in 14.858 seconds (JVM running for 42.474)
02-Jul-2020 17:22:31.264 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\narayaneeyam-0.0.1-SNAPSHOT.war] has finished in [41,103] ms
02-Jul-2020 17:22:31.283 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\docs]
02-Jul-2020 17:22:31.316 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\docs] has finished in [33] ms
02-Jul-2020 17:22:31.316 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\examples]
02-Jul-2020 17:22:32.114 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\examples] has finished in [798] ms
02-Jul-2020 17:22:32.115 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\host-manager]
02-Jul-2020 17:22:32.155 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\host-manager] has finished in [40] ms
02-Jul-2020 17:22:32.156 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\manager]
02-Jul-2020 17:22:32.201 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\manager] has finished in [45] ms
02-Jul-2020 17:22:32.201 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\ROOT]
02-Jul-2020 17:22:32.236 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\Tomcat\apache-tomcat-8.5.56-windows-x64\apache-tomcat-8.5.56\webapps\ROOT] has finished in [35] ms
02-Jul-2020 17:22:32.242 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
02-Jul-2020 17:22:32.257 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 42167 ms

These are are all spring's logs:
2020-07-02 17:22:20.982 INFO 17952 --- [ost-startStop-1] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFERRED mode.
2020-07-02 17:22:21.248 INFO 17952 --- [ost-startStop-1] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 227ms. Found 4 JPA repository interfaces.
2020-07-02 17:22:26.621 INFO 17952 --- [ost-startStop-1] o.s.s.web.DefaultSecurityFilterChain : Creating filter chain: any request, [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter#2e78fc6, org.springframework.security.web.context.SecurityContextPersistenceFilter#5adbbfc, org.springframework.security.web.header.HeaderWriterFilter#5e4ef05f, org.springframework.security.web.csrf.CsrfFilter#6f946b3c, org.springframework.security.web.authentication.logout.LogoutFilter#61bb46d, org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter#5dcf9e1a, org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter#5a5ac80e, org.springframework.security.web.authentication.ui.DefaultLogoutPageGeneratingFilter#4fb155f8, org.springframework.security.web.savedrequest.RequestCacheAwareFilter#54779eb2, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter#39715673, org.springframework.security.web.authentication.AnonymousAuthenticationFilter#6708ba7c, org.springframework.security.web.session.SessionManagementFilter#53fa3c7e, org.springframework.security.web.access.ExceptionTranslationFilter#e50c54, org.springframework.security.web.access.intercept.FilterSecurityInterceptor#50b9a845]
2020-07-02 17:22:29.994 INFO 17952 --- [ost-startStop-1] o.s.b.a.e.web.EndpointLinksResolver : Exposing 2 endpoint(s) beneath base path '/actuator'
o.s.d.r.c means org.springframework.data.repository.config
o.s.s.web means org.springframework.security.web
So these are all logs from Spring's classes.
If you want to see more spring logs, just set the log level to debug in application.yaml:
logging:
level:
org.springframework.boot: debug

camunda spring boot starter with gradle gives processEngineConfigurationImpl bean missing

My issue is quite similar to this one and it's kinda straightforward: copy paste service from maven to gradle project makes starters non operational.
Here is the project I've used as an example and it starts like a charm:
Spring-Boot: (v2.2.5.RELEASE)
Camunda BPM: (v7.12.0)
Camunda BPM Spring Boot Starter: (v3.4.1)
INFO 227460 --- [main] com.camunda.demo.springboot.Application : Starting Application on archbox with PID 227460 (/home/user/ide/IdeaProjects/camunda-spring-boot-amqp-microservice-cloud-example/target/classes started by user in /home/user/ide/IdeaProjects/camunda-spring-boot-amqp-microservice-cloud-example)
INFO 227460 --- [main] com.camunda.demo.springboot.Application : No active profile set, falling back to default profiles: default
INFO 227460 --- [main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
INFO 227460 --- [main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
INFO 227460 --- [main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.31]
INFO 227460 --- [main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
INFO 227460 --- [main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1095 ms
INFO 227460 --- [main] .c.b.s.b.s.r.CamundaJerseyResourceConfig : Configuring camunda rest api.
INFO 227460 --- [main] .c.b.s.b.s.r.CamundaJerseyResourceConfig : Finished configuring camunda rest api.
INFO 227460 --- [main] org.camunda.bpm.spring.boot : STARTER-SB040 Setting up jobExecutor with corePoolSize=3, maxPoolSize:10
INFO 227460 --- [main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'camundaTaskExecutor'
INFO 227460 --- [main] org.camunda.bpm.engine.cfg : ENGINE-12003 Plugin 'CompositeProcessEnginePlugin[genericPropertiesConfiguration, camundaEngineHistoryConfiguration, camundaIdGeneratorConfiguration, camundaProcessEngineConfiguration, camundaDatasourceConfiguration, camundaJobConfiguration, camundaHistoryConfiguration, camundaMetricsConfiguration, camundaAuthorizationConfiguration, failedJobConfiguration, SendEventListenerPlugin, disableDeploymentResourcePattern, eventPublisherPlugin]' activated on process engine 'default'
INFO 227460 --- [main] org.camunda.bpm.spring.boot : STARTER-SB020 ProcessApplication enabled: autoDeployment via springConfiguration#deploymentResourcePattern is disabled
INFO 227460 --- [main] o.c.b.s.b.s.event.EventPublisherPlugin : EVENTING-001: Initialized Camunda Spring Boot Eventing Engine Plugin.
INFO 227460 --- [main] o.c.b.s.b.s.event.EventPublisherPlugin : EVENTING-003: Task events will be published as Spring Events.
INFO 227460 --- [main] o.c.b.s.b.s.event.EventPublisherPlugin : EVENTING-005: Execution events will be published as Spring Events.
INFO 227460 --- [main] o.c.b.s.b.s.event.EventPublisherPlugin : EVENTING-007: History events will be published as Spring events.
INFO 227460 --- [main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
INFO 227460 --- [main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
INFO 227460 --- [main] org.camunda.bpm.engine : ENGINE-00001 Process Engine default created.
INFO 227460 --- [main] o.c.b.s.b.s.w.f.LazyInitRegistration : lazy initialized org.camunda.bpm.spring.boot.starter.webapp.filter.LazyProcessEnginesFilter#69364b2d
INFO 227460 --- [main] o.c.b.s.b.s.w.f.LazyInitRegistration : lazy initialized org.camunda.bpm.spring.boot.starter.webapp.filter.LazySecurityFilter#52f6900a
However project I've copied from part of sources gives following:
Spring-Boot: (v2.1.3.RELEASE)
Camunda BPM: (v7.12.0)
Camunda BPM Spring Boot Starter: (v3.4.1)
INFO 227891 --- [main] com.test.camundatest.Application : Starting Application on archbox with PID 227891 (/home/user/ide/IdeaProjects/gradle-camunda-service/build/classes/java/main started by user in /home/user/ide/IdeaProjects/gradle-camunda-service)
INFO 227891 --- [main] com.test.camundatest.Application : No active profile set, falling back to default profiles: default
INFO 227891 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
INFO 227891 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
INFO 227891 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 14ms. Found 0 repository interfaces.
INFO 227891 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
INFO 227891 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
INFO 227891 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 3ms. Found 0 repository interfaces.
INFO 227891 --- [main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$d980ca4f] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
INFO 227891 --- [main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
INFO 227891 --- [main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
INFO 227891 --- [main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.16]
INFO 227891 --- [main] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/usr/java/packages/lib:/usr/lib64:/lib64:/lib:/usr/lib]
INFO 227891 --- [main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
INFO 227891 --- [main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1883 ms
ERROR 227891 --- [main] o.s.b.web.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'healthEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: Unsatisfied dependency expressed through method 'healthEndpoint' parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthIndicatorRegistry' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthIndicatorAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.health.HealthIndicatorRegistry]: Factory method 'healthIndicatorRegistry' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.camunda.bpm.engine.spring.SpringProcessEngineServicesConfiguration': Unsatisfied dependency expressed through field 'processEngine'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.camunda.bpm.spring.boot.starter.CamundaBpmAutoConfiguration$ProcessEngineConfigurationImplDependingConfiguration': Unsatisfied dependency expressed through field 'processEngineConfigurationImpl'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
INFO 227891 --- [main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
WARN 227891 --- [main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
INFO 227891 --- [main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-06-06 10:21:45.754 ERROR 227891 --- [main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Field processEngineConfigurationImpl in org.camunda.bpm.spring.boot.starter.CamundaBpmAutoConfiguration$ProcessEngineConfigurationImplDependingConfiguration required a bean of type 'org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl' that could not be found.
The following candidates were found but could not be injected:
- Bean method 'processEngineConfigurationImpl' in 'CamundaBpmConfiguration' not loaded because #ConditionalOnMissingBean (types: org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl; SearchStrategy: all) found beans of type 'org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl' processEngineConfiguration
Action:
Consider revisiting the entries above or defining a bean of type 'org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl' in your configuration.
What should I add / change in configs to make my "gradle" service work like "maven" one?

Surprisingly there's key difference in the way that two given projects retrieving connection and data source details.
For instance it's enough for me to put this into maven project properties to point camunda engine to my db (rest left "as-is"):
spring.datasource.url=${POSTGRES_ADDRESS:jdbc:postgresql://localhost:5432/myservice}
spring.datasource.username=${POSTGRES_USER:postgres}
spring.datasource.password=${POSTGRES_PASSWORD:12345}
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=false
while same config just doesn't work for gradle completely, obscurely complaining about processEngineConfigurationImpl bean absence when all what engine needs is database connection details.
So that's what I figured:
#Configuration
#ImportResource({"classpath:config.xml"})
public class Config {
#Value("${spring.datasource.url}")
private String url;
#Value("${spring.datasource.username}")
private String username;
#Value("${spring.datasource.password}")
private String password;
#Bean
public DataSource dataSource() {
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName("org.postgresql.Driver");
dataSource.setUrl(url);
dataSource.setUsername(username);
dataSource.setPassword(password);
return dataSource;
}
#Bean
public PlatformTransactionManager transactionManager() {
return new DataSourceTransactionManager(dataSource());
}
#Bean
public ProcessEngineConfigurationImpl processEngineConfiguration() throws IOException {
SpringProcessEngineConfiguration config = new SpringProcessEngineConfiguration();
config.setDataSource(dataSource());
config.setTransactionManager(transactionManager());
config.setDatabaseSchemaUpdate("true");
config.setJobExecutorActivate(true);
config.setAuthorizationEnabled(true);
config.setDefaultSerializationFormat("application/json");
PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
config.setDeploymentResources(resolver.getResources("classpath:/bpmn/*.bpmn"));
List<ProcessEnginePlugin> processEnginePlugins = new ArrayList<>();
config.setProcessEnginePlugins(processEnginePlugins);
return config;
}
}
And it works:
Spring-Boot: (v2.1.3.RELEASE)
Camunda BPM: (v7.13.0)
Camunda BPM Spring Boot Starter: (v7.13.0)
INFO 378753 --- [main] com.myname.myservice.Application : Starting Application on pc with PID 378753 (/home/user/IdeaProjects/myservice/build/classes/java/main started by user in /home/user/IdeaProjects/myservice)
INFO 378753 --- [main] com.myname.myservice.Application : No active profile set, falling back to default profiles: default
INFO 378753 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
INFO 378753 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
INFO 378753 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 7ms. Found 0 repository interfaces.
INFO 378753 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
INFO 378753 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
INFO 378753 --- [main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 7ms. Found 0 repository interfaces.
INFO 378753 --- [main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.kafka.annotation.KafkaBootstrapConfiguration' of type [org.springframework.kafka.annotation.KafkaBootstrapConfiguration$$EnhancerBySpringCGLIB$$f04798b1] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
INFO 378753 --- [main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$1c95872e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
INFO 378753 --- [main] o.f.c.internal.license.VersionPrinter : Flyway Community Edition 5.2.4 by Boxfuse
INFO 378753 --- [main] o.f.c.internal.database.DatabaseFactory : Database: jdbc:postgresql://localhost:5432/myservice (PostgreSQL 12.1)
WARN 378753 --- [main] o.f.c.internal.database.base.Database : Flyway upgrade recommended: PostgreSQL 12.1 is newer than this version of Flyway and support has not been tested.
INFO 378753 --- [main] o.f.core.internal.command.DbValidate : Successfully validated 2 migrations (execution time 00:00.010s)
INFO 378753 --- [main] o.f.core.internal.command.DbMigrate : Current version of schema "public": 1
INFO 378753 --- [main] o.f.core.internal.command.DbMigrate : Schema "public" is up to date. No migration necessary.
INFO 378753 --- [main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
INFO 378753 --- [main] org.hibernate.Version : HHH000412: Hibernate Core {5.3.7.Final}
INFO 378753 --- [main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
INFO 378753 --- [main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
INFO 378753 --- [main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL95Dialect
INFO 378753 --- [main] o.h.e.j.e.i.LobCreatorBuilderImpl : HHH000422: Disabling contextual LOB creation as connection was null
INFO 378753 --- [main] org.hibernate.type.BasicTypeRegistry : HHH000270: Type registration [java.util.UUID] overrides previous : org.hibernate.type.UUIDBinaryType#642c6461
INFO 378753 --- [main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
INFO 378753 --- [main] org.camunda.feel.FeelEngine : Engine created. [value-mapper: CompositeValueMapper(List(org.camunda.feel.impl.JavaValueMapper#a047bdb)), function-provider: org.camunda.bpm.dmn.feel.impl.scala.function.CustomFunctionTransformer#173b1af1, configuration: Configuration(false)]
INFO 378753 --- [main] org.camunda.bpm.engine : ENGINE-00001 Process Engine default created.
INFO 378753 --- [main] org.camunda.bpm.engine.jobexecutor : ENGINE-14014 Starting up the JobExecutor[org.camunda.bpm.engine.impl.jobexecutor.DefaultJobExecutor].
INFO 378753 --- [ultJobExecutor]] org.camunda.bpm.engine.jobexecutor : ENGINE-14018 JobExecutor[org.camunda.bpm.engine.impl.jobexecutor.DefaultJobExecutor] starting to acquire jobs
INFO 378753 --- [main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'asyncExecutor'
INFO 378753 --- [main] i.micrometer.influx.InfluxMeterRegistry : publishing metrics to influx every 1m
INFO 378753 --- [main] org.camunda.bpm.spring.boot : STARTER-SB040 Setting up jobExecutor with corePoolSize=3, maxPoolSize:10
INFO 378753 --- [main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'camundaTaskExecutor'
INFO 378753 --- [main] o.s.s.c.ThreadPoolTaskScheduler : Initializing ExecutorService 'taskScheduler'
INFO 378753 --- [main] n.d.b.g.s.s.GrpcServerLifecycle : gRPC Server started, listening on address: *, port: 8081
INFO 378753 --- [main] org.camunda.bpm.container : ENGINE-08024 Found processes.xml file at file:/home/user/IdeaProjects/myservice/build/resources/main/META-INF/processes.xml
INFO 378753 --- [main] org.camunda.bpm.container : ENGINE-08023 Deployment summary for process archive 'application':
As a sidenote - for unknown reason sql dialect is very important for bpm so this one is mandatory to set like this:
spring.jpa.database-platform = org.hibernate.dialect.PostgreSQL95Dialect
and not to forget to please flyway if used:
spring.flyway.baseline-on-migrate = true

Exception sending context initialized event to listener instance of class org.apache.tomcat.websocket.server.WsContextListener

I'm trying to run one of official spring examples gt-rest-service and always get an error.
2015-07-11 23:38:11.058 INFO 3833 --- [lication.main()]
s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with
port(s): 8080 (http) 2015-07-11 23:38:11.376 INFO 3833 ---
[lication.main()] o.apache.catalina.core.StandardService : Starting
service Tomcat 2015-07-11 23:38:11.385 INFO 3833 ---
[lication.main()] org.apache.catalina.core.StandardEngine : Starting
Servlet Engine: Apache Tomcat/8.0.23 2015-07-11 23:38:11.551 INFO
3833 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] :
Initializing Spring embedded WebApplicationContext 2015-07-11
23:38:11.551 INFO 3833 --- [ost-startStop-1]
o.s.web.context.ContextLoader : Root WebApplicationContext:
initialization completed in 2443 ms 2015-07-11 23:38:12.479 INFO 3833
--- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/] 2015-07-11 23:38:12.484
INFO 3833 --- [ost-startStop-1]
o.s.b.c.embedded.FilterRegistrationBean : Mapping filter:
'characterEncodingFilter' to: [/] 2015-07-11 23:38:12.485 INFO 3833
--- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/] 2015-07-11
23:38:12.706 ERROR 3833 --- [ost-startStop-1]
o.a.c.c.C.[Tomcat].[localhost].[/] : Exception sending context
initialized event to listener instance of class
org.apache.tomcat.websocket.server.WsContextListener
java.lang.VerifyError: StackMapTable error: bad offset Exception
Details: Location:
org/apache/tomcat/websocket/WsWebSocketContainer.createSSLEngine(Ljava/util/Map;)Ljavax/net/ssl/SSLEngine;
#0: aload_1 Reason:
Invalid stackmap specification. Current Frame:
bci: #121
flags: { }
locals: { 'org/apache/tomcat/websocket/WsWebSocketContainer', 'java/util/Map', 'javax/net/ssl/SSLContext', 'java/lang/String',
'java/lang/String', 'java/io/File', 'java/security/KeyStore',
'java/io/InputStream', 'java/lang/Throwable' }
stack: { 'java/lang/Throwable' } Bytecode:
I hope somebody helps me out with the problem.

Mostly java.lang.VerifyError occurs when you have compiled against a different library than you are using at runtime. So you need to check your library
Try restarting the IDE to get it to recognize the sync issue.

So just delete maven repository and everything will be Ok