After deploying a RTC server side Operation Participant I am getting error while saving Work Item.

Error:

com.ibm.team.repository.common.transport.ServiceMethodInvocationError: java.lang.Error: Unresolved compilation problem:
    The method run(AdvisableOperation, IProcessConfigurationElement, IParticipantInfoCollector, IProgressMonitor) of type SendDatatoSlackParticipant must override a superclass method


    at com.ibm.team.repository.transport.client.RemoteTeamService.getAppropriateException(RemoteTeamService.java:737)

    at com.ibm.team.repository.transport.client.RemoteTeamService.executeMethod(RemoteTeamService.java:573)

    at com.ibm.team.repository.transport.client.RemoteTeamService.invoke(RemoteTeamService.java:202)

    at com.ibm.team.repository.transport.client.ServiceInvocationHandler.invoke(ServiceInvocationHandler.java:43)

    at com.sun.proxy.$Proxy37.save(Unknown Source)
...

Caused by: java.lang.Error: Unresolved compilation problem:
    The method run(AdvisableOperation, IProcessConfigurationElement, IParticipantInfoCollector, IProgressMonitor) of type SendDatatoSlackParticipant must override a superclass method


    at cio.jazz.rtcext.workitem.extensions.slack.service.SendDatatoSlackParticipant.run(SendDatatoSlackParticipant.java:45)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:95)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)

    at java.lang.reflect.Method.invoke(Method.java:620)


I am able to execute same plugin in the Jetty server (without any error).
I have implemented the run method from the IOperationParticipant.

I have gone through the RTC Lab Extension Workshop: https://jazz.net/library/article/1000

I am following the steps mentioned in the Lab 6.

I am able to deploy the plugin on my RTC server(hosted on local machine) and I can see a Follow-up action is also available for this plugin.

When I add this follow-up action I don't get suggestions to make changes in the Process Configuration source of the Project Area which I get in jetty server. (I have used parametrization).

However, when I make changes in Process configuration it is saved without any error/warning.

But, when I am trying to save any Work Item I am getting the above error.

I would like to upload my ccm log file but I don't get option to add the attachments.

This is some part of my log file:

2016-05-04 21:37:43,036 [Default Executor-thread-239 @@ 21:37 myadmin <com.ibm.team.workitem.newWorkItem/Save@aa2f1673-aad3-4e18-8e33-0f9160343091> /ccm/service/com.ibm.team.workitem.common.internal.rest.IWorkItemRestService/workItem2]  WARN .team.repository.servlet.AbstractTeamServerServlet  - CRJAZ1163E Error error occurred while processing a POST request for com.ibm.team.workitem.common.internal.rest.IWorkItemRestService.postWorkItem2(). CRJAZ1170I The request was made by user "myadmin" from "127.0.0.1".CRJAZ1166I The stack trace hash is A644995A4DC7BDB6ECD967D3BB9A9099BABCFFD7.
java.lang.Error: Unresolved compilation problem:
    The method run(AdvisableOperation, IProcessConfigurationElement, IParticipantInfoCollector, IProgressMonitor) of type SendDatatoSlackParticipant must override a superclass method

    at cio.jazz.rtcext.workitem.extensions.slack.service.SendDatatoSlackParticipant.run(SendDatatoSlackParticipant.java:45)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:95)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)
    at java.lang.reflect.Method.invoke(Method.java:620)
    at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.invoke(ExportProxyServiceRecord.java:361)
    at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.access$0(ExportProxyServiceRecord.java:347)
    at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord$ExportedServiceInvocationHandler.invoke(ExportProxyServiceRecord.java:56)
    at com.sun.proxy.$Proxy1714.run(Unknown Source)
    at com.ibm.team.process.internal.common.advice.runtime.OperationAdviceManager.runParticipant(OperationAdviceManager.java:1156)
    at com.ibm.team.process.internal.common.advice.runtime.OperationAdviceManager.runParticipants(OperationAdviceManager.java:986)
    at com.ibm.team.process.internal.common.advice.runtime.OperationAdviceManager.advise(OperationAdviceManager.java:332)
    at com.ibm.team.process.internal.common.util.AbstractProcess.doAdvise(AbstractProcess.java:197)
    at com.ibm.team.process.internal.service.ServerProcess.access$2(ServerProcess.java:1)
    at com.ibm.team.process.internal.service.ServerProcess$2.run(ServerProcess.java:159)
    at com.ibm.team.repository.service.internal.PrimitiveTransactionService$3.run(PrimitiveTransactionService.java:167)
    at com.ibm.team.repository.service.internal.rdb.RepositoryDatabase.runTransaction(RepositoryDatabase.java:384)
    at com.ibm.team.repository.service.internal.rdb.RepositoryDatabase.runInTransaction(RepositoryDatabase.java:289)
    at com.ibm.team.repository.service.internal.PrimitiveTransactionService.runInTransaction(PrimitiveTransactionService.java:101)
    at com.ibm.team.repository.service.internal.PrimitiveTransactionService.runInTransaction(PrimitiveTransactionService.java:96)
    at sun.reflect.GeneratedMethodAccessor343.invoke(Unknown Source)


I have gone through the below links but didn't find anything specific to this error:

Learning To Fly: Getting Started with the RTC Java API’s | rsjazz
Is The Extension Deployed? How Can I Redeploy? | rsjazz


I am struggling with this issue for few days. Any help/ suggestion would be helpful.