java.lang.AbstractMethodError: com.atlassian.sandbox.bamboo.actions.SandboxPostStagedBuildAction.execute(Lcom/atlassian/bamboo/chains/StageExecution;Lcom/atlassian/bamboo/build/Job;Lcom/atlassian/bamboo/resultsummary/BuildResultsSummary;)V
	at com.atlassian.bamboo.chains.ChainPluginSupportImpl.buildCompleted(ChainPluginSupportImpl.java:194)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl$2.run(ChainExecutionManagerImpl.java:203)
	at com.atlassian.util.concurrent.ManagedLocks$ManagedLockImpl.withLock(ManagedLocks.java:322)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.handleEvent(ChainExecutionManagerImpl.java:189)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at org.springframework.orm.hibernate.HibernateInterceptor.invoke(HibernateInterceptor.java:117)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy40.handleEvent(Unknown Source)
	at com.atlassian.bamboo.event.BambooEventManager$2.run(BambooEventManager.java:66)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$2.run(NamedThreadFactory.java:50)
	at java.lang.Thread.run(Thread.java:637)