hi i have a error about the running of camunda. It is
va.lang.NoClassDefFoundError: org/camunda/bpm/engine/impl/util/BpmnParseUtil
at org.camunda.connect.plugin.impl.ConnectorParseListener.parseServiceTask(ConnectorParseListener.java:30) ~[camunda-engine-plugin-connect-7.2.0.jar:7.2.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.parseServiceTaskLike(BpmnParse.java:2169) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.parseServiceTask(BpmnParse.java:2124) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.parseActivity(BpmnParse.java:1299) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.parseActivities(BpmnParse.java:1276) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.parseScope(BpmnParse.java:648) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.parseProcess(BpmnParse.java:566) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.parseProcessDefinitions(BpmnParse.java:491) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.parseRootElement(BpmnParse.java:290) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.execute(BpmnParse.java:255) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.bpmn.deployer.BpmnDeployer.transformDefinitions(BpmnDeployer.java:105) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.AbstractDefinitionDeployer.transformResource(AbstractDefinitionDeployer.java:99) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.AbstractDefinitionDeployer.parseDefinitionResources(AbstractDefinitionDeployer.java:74) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.AbstractDefinitionDeployer.deploy(AbstractDefinitionDeployer.java:64) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.persistence.deploy.cache.CacheDeployer$1.call(CacheDeployer.java:54) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.persistence.deploy.cache.CacheDeployer$1.call(CacheDeployer.java:51) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.interceptor.CommandContext.runWithoutAuthorization(CommandContext.java:537) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.persistence.deploy.cache.CacheDeployer.deploy(CacheDeployer.java:51) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.persistence.deploy.cache.DeploymentCache.deploy(DeploymentCache.java:67) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.persistence.entity.DeploymentManager.insertDeployment(DeploymentManager.java:65) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.cmd.DeployCmd.deploy(DeployCmd.java:255) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.cmd.DeployCmd$1.call(DeployCmd.java:156) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.cmd.DeployCmd$1.call(DeployCmd.java:142) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.interceptor.CommandContext.runWithoutAuthorization(CommandContext.java:537) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.cmd.DeployCmd.doExecute(DeployCmd.java:142) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:102) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:82) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:28) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:110) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:46) ~[camunda-engine-spring-7.12.0.jar:7.12.0]
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.camunda.bpm.engine.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:44) ~[camunda-engine-spring-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.RepositoryServiceImpl.deployWithResult(RepositoryServiceImpl.java:102) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.repository.DeploymentBuilderImpl.deployWithResult(DeploymentBuilderImpl.java:270) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:266) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.repository.ProcessApplicationDeploymentBuilderImpl.deploy(ProcessApplicationDeploymentBuilderImpl.java:63) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.container.impl.deployment.DeployProcessArchiveStep.performOperationStep(DeployProcessArchiveStep.java:146) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.container.impl.spi.DeploymentOperation.execute(DeploymentOperation.java:120) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.container.impl.jmx.MBeanServiceContainer.executeDeploymentOperation(MBeanServiceContainer.java:160) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.container.impl.spi.DeploymentOperation$DeploymentOperationBuilder.execute(DeploymentOperation.java:216) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.container.impl.RuntimeContainerDelegateImpl.deployProcessApplication(RuntimeContainerDelegateImpl.java:102) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.application.AbstractProcessApplication.deploy(AbstractProcessApplication.java:66) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.spring.application.SpringProcessApplication.start(SpringProcessApplication.java:110) ~[camunda-engine-spring-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.spring.application.SpringProcessApplication.afterPropertiesSet(SpringProcessApplication.java:119) ~[camunda-engine-spring-7.12.0.jar:7.12.0]
at org.camunda.bpm.spring.boot.starter.SpringBootProcessApplication.afterPropertiesSet(SpringBootProcessApplication.java:102) ~[camunda-bpm-spring-boot-starter-3.4.0.jar:3.4.0]
at org.camunda.bpm.engine.spring.application.SpringProcessApplication.onApplicationEvent(SpringProcessApplication.java:96) ~[camunda-engine-spring-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.spring.application.SpringProcessApplication.onApplicationEvent(SpringProcessApplication.java:52) ~[camunda-engine-spring-7.12.0.jar:7.12.0]
at org.camunda.bpm.spring.boot.starter.SpringBootProcessApplication$$EnhancerBySpringCGLIB$$effd3de5.onApplicationEvent() ~[camunda-bpm-spring-boot-starter-3.4.0.jar:3.4.0]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:897) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:162) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at com.example.workflow.Application.main(Application.java:17) ~[classes/:na]
Caused by: java.lang.ClassNotFoundException: org.camunda.bpm.engine.impl.util.BpmnParseUtil
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602) ~[na:na]
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) ~[na:na]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
… 65 common frames omitted
2020-02-21 11:47:44.529 WARN 4880 — [ main] org.camunda.bpm.application : ENGINE-07017 Calling undeploy() on process application that is not deployed.
2020-02-21 11:47:44.549 INFO 4880 — [ main] org.camunda.bpm.engine : ENGINE-00007 Process Engine default closed
2020-02-21 11:47:44.550 INFO 4880 — [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService ‘camundaTaskExecutor’
2020-02-21 11:47:44.550 INFO 4880 — [ main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit ‘default’
2020-02-21 11:47:44.550 INFO 4880 — [ main] .SchemaDropperImpl$DelayedDropActionImpl : HHH000477: Starting delayed evictData of schema as part of SessionFactory shut-down’
2020-02-21 11:47:44.552 INFO 4880 — [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated…
2020-02-21 11:47:44.603 INFO 4880 — [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
It is the example of https://github.com/camunda/camunda-bpm-examples/tree/master/servicetask/rest-service . Exist a bit difference in the some artefactd in the pom file. Why is not found with servicetask?