InvocationTargetException with null cause?

Hi

I am afraid this is probably more a general Java question than a pure GWT question. But I am suspecting the problem somewhere in GWT server-side hence asking here.

I am looking for help to read my stack trace around GWT RPC and InvocationTargetException Btw the system recovered after a server restart, without changing anything.

Stack trace was:

...

    at java.lang.Thread.run(Thread.java:748)
Caused by: com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract xx.webapp.shared.domain.xxDTO xx.share>
     at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:416)
     at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:605)
     at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:571)
     at xxx.server.spring.SpringGwtRemoteServiceServlet.processCall(SpringGwtRemoteServiceServlet.java:120)
      ... 101 common frames omitted
Caused by: java.lang.NullPointerException: null

{call stack log ends here}

Relevant GWT code from RPC class:

RPC class checks for cause==null so that's not it. But then why is it not showing the actual line of code where the causing exception is thrown?

Regards,

Alex

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