18-Oct-2016 13:11:26.743 SEVERE [main] org.apache.catalina.startup.Catalina.start The required Server component failed to start so Tomcat is unable to start.
 org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:625)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:351)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
Caused by: org.camunda.bpm.engine.ProcessEngineException: ENGINE-08043 Exception while performing 'deploy BPM platform' => 'Start process engine default': ENGINE-09008 Exception while instantiating class 'org.camunda.bpm.extension.reactor.plugin.ReactorProcessEnginePlugin': org.camunda.bpm.extension.reactor.plugin.ReactorProcessEnginePlugin
	at org.camunda.bpm.container.impl.ContainerIntegrationLogger.exceptionWhilePerformingOperationStep(ContainerIntegrationLogger.java:312)
	at org.camunda.bpm.container.impl.spi.DeploymentOperation.execute(DeploymentOperation.java:130)
	at org.camunda.bpm.container.impl.jmx.MBeanServiceContainer.executeDeploymentOperation(MBeanServiceContainer.java:156)
	at org.camunda.bpm.container.impl.spi.DeploymentOperation$DeploymentOperationBuilder.execute(DeploymentOperation.java:203)
	at org.camunda.bpm.container.impl.tomcat.TomcatBpmPlatformBootstrap.deployBpmPlatform(TomcatBpmPlatformBootstrap.java:72)
	at org.camunda.bpm.container.impl.tomcat.TomcatBpmPlatformBootstrap.lifecycleEvent(TomcatBpmPlatformBootstrap.java:57)
	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
	at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:402)
	at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:347)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:762)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 7 more
Caused by: org.camunda.bpm.engine.ProcessEngineException: ENGINE-09008 Exception while instantiating class 'org.camunda.bpm.extension.reactor.plugin.ReactorProcessEnginePlugin': org.camunda.bpm.extension.reactor.plugin.ReactorProcessEnginePlugin
	at org.camunda.bpm.engine.impl.util.EngineUtilLogger.exceptionWhileInstantiatingClass(EngineUtilLogger.java:78)
	at org.camunda.bpm.engine.impl.util.ReflectUtil.instantiate(ReflectUtil.java:192)
	at org.camunda.bpm.container.impl.deployment.StartProcessEngineStep.createInstance(StartProcessEngineStep.java:173)
	at org.camunda.bpm.container.impl.deployment.StartProcessEngineStep.configurePlugins(StartProcessEngineStep.java:153)
	at org.camunda.bpm.container.impl.deployment.StartProcessEngineStep.performOperationStep(StartProcessEngineStep.java:107)
	at org.camunda.bpm.container.impl.spi.DeploymentOperation.execute(DeploymentOperation.java:114)
	... 17 more
Caused by: java.lang.InstantiationException: org.camunda.bpm.extension.reactor.plugin.ReactorProcessEnginePlugin
	at java.lang.Class.newInstance(Class.java:427)
	at org.camunda.bpm.engine.impl.util.ReflectUtil.instantiate(ReflectUtil.java:189)
	... 21 more
Caused by: java.lang.NoSuchMethodException: org.camunda.bpm.extension.reactor.plugin.ReactorProcessEnginePlugin.<init>()
	at java.lang.Class.getConstructor0(Class.java:3082)
	at java.lang.Class.newInstance(Class.java:412)
	... 22 more