Flowable 6.3.1 - flowable-rest and flowable-task down due to parce exception

Hi,

In Flowable 6.3.1 - flowable-rest and flowable-task are down due to parce exception as below,
do i need to add/change any lib files?

2018-07-26 07:06:05.568 INFO 19204 — [ost-startStop-1] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-07-26 07:06:05.572 INFO 19204 — [ost-startStop-1] o.s.j.e.a.AnnotationMBeanExporter : Bean with name ‘dataSource’ has been autodetected for JMX exposure
2018-07-26 07:06:05.586 INFO 19204 — [ost-startStop-1] o.s.j.e.a.AnnotationMBeanExporter : Located MBean ‘dataSource’: registering with JMX server as MBean [flowable-ui-task:name=dataSource,type=HikariDataSource]
2018-07-26 07:06:05.601 INFO 19204 — [ost-startStop-1] o.s.c.s.DefaultLifecycleProcessor : Starting beans in phase -20
2018-07-26 07:06:05.602 INFO 19204 — [ost-startStop-1] o.s.c.s.DefaultLifecycleProcessor : Starting beans in phase 0
2018-07-26 07:06:05.605 INFO 19204 — [ost-startStop-1] o.s.c.s.DefaultLifecycleProcessor : Starting beans in phase 20
2018-07-26 07:06:05.997 ERROR 19204 — [ost-startStop-1] o.f.e.i.b.d.ParsedDeploymentBuilder : Could not parse resource one-task-process.bpmn20.xml

org.flowable.bpmn.exceptions.XMLException: cvc-complex-type.2.4.a: Invalid content was found starting with element ‘extensionElements’. One of ‘{“http://www.omg.org/spec/BPMN/20100524/MODEL”:flowElement, “http://www.omg.org/spec/BPMN/20100524/MODEL”:artifact, “http://www.omg.org/spec/BPMN/20100524/MODEL”:resourceRole, “http://www.omg.org/spec/BPMN/20100524/MODEL”:correlationSubscription, “http://www.omg.org/spec/BPMN/20100524/MODEL”:supports}’ is expected.
at org.flowable.bpmn.converter.BpmnXMLConverter.convertToBpmnModel(BpmnXMLConverter.java:273) ~[flowable-bpmn-converter-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.bpmn.parser.BpmnParse.execute(BpmnParse.java:148) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.bpmn.deployer.ParsedDeploymentBuilder.createBpmnParseFromResource(ParsedDeploymentBuilder.java:97) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.bpmn.deployer.ParsedDeploymentBuilder.build(ParsedDeploymentBuilder.java:55) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:76) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.persistence.deploy.DeploymentManager.deploy(DeploymentManager.java:62) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.cmd.DeployCmd.executeDeploy(DeployCmd.java:123) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:68) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:43) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.CommandInvoker$1.run(CommandInvoker.java:51) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:93) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:72) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:56) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.BpmnOverrideContextInterceptor.execute(BpmnOverrideContextInterceptor.java:25) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:53) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:71) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.idm.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:49) ~[flowable-idm-spring-6.3.1.jar:6.3.1]
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.flowable.idm.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:46) ~[flowable-idm-spring-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:51) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.RepositoryServiceImpl.deploy(RepositoryServiceImpl.java:97) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:209) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.spring.configurator.DefaultAutoDeploymentStrategy.deployResources(DefaultAutoDeploymentStrategy.java:61) ~[flowable-spring-6.3.1.jar:6.3.1]
at org.flowable.spring.SpringProcessEngineConfiguration.autoDeployResources(SpringProcessEngineConfiguration.java:125) ~[flowable-spring-6.3.1.jar:6.3.1]
at org.flowable.spring.SpringProcessEngineConfiguration.lambda$start$0(SpringProcessEngineConfiguration.java:213) ~[flowable-spring-6.3.1.jar:6.3.1]
at java.util.ArrayList.forEach(ArrayList.java:1255) [?:1.8.0_151]
at org.flowable.spring.SpringProcessEngineConfiguration.start(SpringProcessEngineConfiguration.java:213) [flowable-spring-6.3.1.jar:6.3.1]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:52) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:157) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:121) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:885) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:161) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:155) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:135) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:87) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172) [spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196) [catalina.jar:8.5.24]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.5.24]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752) [catalina.jar:8.5.24]
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728) [catalina.jar:8.5.24]
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734) [catalina.jar:8.5.24]
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:986) [catalina.jar:8.5.24]
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857) [catalina.jar:8.5.24]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_151]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element ‘extensionElements’. One of ‘{“http://www.omg.org/spec/BPMN/20100524/MODEL”:flowElement, “http://www.omg.org/spec/BPMN/20100524/MODEL”:artifact, “http://www.omg.org/spec/BPMN/20100524/MODEL”:resourceRole, “http://www.omg.org/spec/BPMN/20100524/MODEL”:correlationSubscription, “http://www.omg.org/spec/BPMN/20100524/MODEL”:supports}’ is expected.
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.xs.XMLSchemaValidator.reportSchemaError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.jaxp.validation.StAXValidatorHelper$StreamHelper.validate(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.jaxp.validation.StAXValidatorHelper.validate(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.jaxp.validation.ValidatorImpl.validate(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at javax.xml.validation.Validator.validate(Validator.java:124) ~[?:1.8.0_151]
at org.flowable.bpmn.converter.BpmnXMLConverter.validateModel(BpmnXMLConverter.java:222) ~[flowable-bpmn-converter-6.3.1.jar:6.3.1]
at org.flowable.bpmn.converter.BpmnXMLConverter.convertToBpmnModel(BpmnXMLConverter.java:266) ~[flowable-bpmn-converter-6.3.1.jar:6.3.1]
… 56 more

2018-07-26 07:06:06.019 ERROR 19204 — [ost-startStop-1] o.f.c.e.i.i.CommandContext : Error while closing command context

org.flowable.bpmn.exceptions.XMLException: cvc-complex-type.2.4.a: Invalid content was found starting with element ‘extensionElements’. One of ‘{“http://www.omg.org/spec/BPMN/20100524/MODEL”:flowElement, “http://www.omg.org/spec/BPMN/20100524/MODEL”:artifact, “http://www.omg.org/spec/BPMN/20100524/MODEL”:resourceRole, “http://www.omg.org/spec/BPMN/20100524/MODEL”:correlationSubscription, “http://www.omg.org/spec/BPMN/20100524/MODEL”:supports}’ is expected.
at org.flowable.bpmn.converter.BpmnXMLConverter.convertToBpmnModel(BpmnXMLConverter.java:273) ~[flowable-bpmn-converter-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.bpmn.parser.BpmnParse.execute(BpmnParse.java:148) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.bpmn.deployer.ParsedDeploymentBuilder.createBpmnParseFromResource(ParsedDeploymentBuilder.java:97) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.bpmn.deployer.ParsedDeploymentBuilder.build(ParsedDeploymentBuilder.java:55) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:76) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.persistence.deploy.DeploymentManager.deploy(DeploymentManager.java:62) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.cmd.DeployCmd.executeDeploy(DeployCmd.java:123) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:68) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:43) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.CommandInvoker$1.run(CommandInvoker.java:51) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:93) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:72) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:56) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.interceptor.BpmnOverrideContextInterceptor.execute(BpmnOverrideContextInterceptor.java:25) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:53) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:71) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.idm.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:49) ~[flowable-idm-spring-6.3.1.jar:6.3.1]
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.flowable.idm.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:46) ~[flowable-idm-spring-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:51) ~[flowable-engine-common-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.RepositoryServiceImpl.deploy(RepositoryServiceImpl.java:97) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:209) ~[flowable-engine-6.3.1.jar:6.3.1]
at org.flowable.spring.configurator.DefaultAutoDeploymentStrategy.deployResources(DefaultAutoDeploymentStrategy.java:61) ~[flowable-spring-6.3.1.jar:6.3.1]
at org.flowable.spring.SpringProcessEngineConfiguration.autoDeployResources(SpringProcessEngineConfiguration.java:125) ~[flowable-spring-6.3.1.jar:6.3.1]
at org.flowable.spring.SpringProcessEngineConfiguration.lambda$start$0(SpringProcessEngineConfiguration.java:213) ~[flowable-spring-6.3.1.jar:6.3.1]
at java.util.ArrayList.forEach(ArrayList.java:1255) [?:1.8.0_151]
at org.flowable.spring.SpringProcessEngineConfiguration.start(SpringProcessEngineConfiguration.java:213) [flowable-spring-6.3.1.jar:6.3.1]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:52) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:157) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:121) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:885) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:161) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) [spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:155) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:135) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:87) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172) [spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196) [catalina.jar:8.5.24]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.5.24]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752) [catalina.jar:8.5.24]
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728) [catalina.jar:8.5.24]
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734) [catalina.jar:8.5.24]
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:986) [catalina.jar:8.5.24]
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857) [catalina.jar:8.5.24]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_151]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element ‘extensionElements’. One of ‘{“http://www.omg.org/spec/BPMN/20100524/MODEL”:flowElement, “http://www.omg.org/spec/BPMN/20100524/MODEL”:artifact, “http://www.omg.org/spec/BPMN/20100524/MODEL”:resourceRole, “http://www.omg.org/spec/BPMN/20100524/MODEL”:correlationSubscription, “http://www.omg.org/spec/BPMN/20100524/MODEL”:supports}’ is expected.
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.xs.XMLSchemaValidator.reportSchemaError(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.jaxp.validation.StAXValidatorHelper$StreamHelper.validate(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.jaxp.validation.StAXValidatorHelper.validate(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at org.apache.xerces.jaxp.validation.ValidatorImpl.validate(Unknown Source) ~[xercesImpl-2.10.0.jar:?]
at javax.xml.validation.Validator.validate(Validator.java:124) ~[?:1.8.0_151]
at org.flowable.bpmn.converter.BpmnXMLConverter.validateModel(BpmnXMLConverter.java:222) ~[flowable-bpmn-converter-6.3.1.jar:6.3.1]
at org.flowable.bpmn.converter.BpmnXMLConverter.convertToBpmnModel(BpmnXMLConverter.java:266) ~[flowable-bpmn-converter-6.3.1.jar:6.3.1]
… 56 more

2018-07-26 07:06:06.050 WARN 19204 — [ost-startStop-1] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean ‘springProcessEngineConfiguration’; nested exception is org.flowable.bpmn.exceptions.XMLException: cvc-complex-type.2.4.a: Invalid content was found starting with element ‘extensionElements’. One of ‘{“http://www.omg.org/spec/BPMN/20100524/MODEL”:flowElement, “http://www.omg.org/spec/BPMN/20100524/MODEL”:artifact, “http://www.omg.org/spec/BPMN/20100524/MODEL”:resourceRole, “http://www.omg.org/spec/BPMN/20100524/MODEL”:correlationSubscription, “http://www.omg.org/spec/BPMN/20100524/MODEL”:supports}’ is expected.
2018-07-26 07:06:06.068 INFO 19204 — [ost-startStop-1] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown
2018-07-26 07:06:06.071 INFO 19204 — [ost-startStop-1] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans
2018-07-26 07:06:06.078 INFO 19204 — [ost-startStop-1] o.f.j.s.i.a.AbstractAsyncExecutor : Shutting down the async job executor [org.flowable.spring.job.service.SpringAsyncExecutor].
2018-07-26 07:06:06.082 INFO 19204 — [uire-async-jobs] o.f.j.s.i.a.AcquireAsyncJobsDueRunnable : stopped async job due acquisition
2018-07-26 07:06:06.082 INFO 19204 — [uire-timer-jobs] o.f.j.s.i.a.AcquireTimerJobsRunnable : stopped async job due acquisition
2018-07-26 07:06:06.082 INFO 19204 — [et-expired-jobs] o.f.j.s.i.a.ResetExpiredJobsRunnable : stopped resetting expired jobs
2018-07-26 07:06:06.091 INFO 19204 — [ost-startStop-1] o.s.s.c.ThreadPoolTaskExecutor : Shutting down ExecutorService ‘taskExecutor’
2018-07-26 07:06:06.092 INFO 19204 — [ost-startStop-1] c.z.h.HikariDataSource : HikariPool-5 - Shutdown initiated…
2018-07-26 07:06:06.106 INFO 19204 — [ost-startStop-1] c.z.h.HikariDataSource : HikariPool-5 - Shutdown completed.
2018-07-26 07:06:06.108 INFO 19204 — [ost-startStop-1] o.s.s.c.ThreadPoolTaskExecutor : Shutting down ExecutorService ‘getAsyncExecutor’
2018-07-26 07:06:06.125 WARN 19204 — [ost-startStop-1] o.s.b.c.p.m.PropertiesMigrationListener :
The use of configuration keys that have been renamed was found in the environment:

Property source ‘applicationConfig: [classpath:/application.properties]’:
Key: server.context-path
Line: 4
Replacement: server.servlet.context-path

Each configuration key has been temporarily mapped to its replacement for your convenience. To silence this warning, please update your configuration to use the new keys.

2018-07-26 07:06:06.141 INFO 19204 — [ost-startStop-1] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled.
2018-07-26 07:06:06.151 ERROR 19204 — [ost-startStop-1] o.s.b.SpringApplication : Application run failed

Can you share your BPMN xml perhaps? It seems like it is invalid. Did this work on a previous version? How was the XML created?

The problems seems to be:

Invalid content was found starting with element ‘extensionElements’. One of ‘{“http://www.omg.org/spec/BPMN/20100524/MODEL”:flowElement, “http://www.omg.org/spec/BPMN/20100524/MODEL”:artifact, “http://www.omg.org/spec/BPMN/20100524/MODEL”:resourceRole, “http://www.omg.org/spec/BPMN/20100524/MODEL”:correlationSubscription, “http://www.omg.org/spec/BPMN/20100524/MODEL”:supports}’ is expected.

i am not deploying any new bpmn files, this is the first time when tried by deploying flowable6.3.1 .war files
a) downloaded flowable6.3.1 war files and deployed into my local tomcat server
b) added application.properties file in tomcat/lib folder with database info.
c) on building the application, all are successfully up&running but flowable-task/flowable-rest are failed due below exception internally
d) its failed on trying to parse the default flowable sample apps.

this is from aboce exception only:

2018-07-26 07:06:05.997 ERROR 19204 — [ost-startStop-1] o.f.e.i.b.d.ParsedDeploymentBuilder : Could not parse resource one-task-process.bpmn20.xml