java.lang.NullPointerException: This exception has no message.

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This exception has no message.
at oracle.portal.provider.v1.http.Servlet20Renderer.renderBody(
at oracle.portal.provider.v1.RenderManager.render(
at oracle.portal.provider.v1.http.ServletProviderResponse.showPortlet(
at oracle.portal.provider.v1.http.HttpProvider.dispatchProviderAction(
at oracle.portal.provider.v1.http.HttpProvider.service(
at javax.servlet.http.HttpServlet.service(
at org.apache.jserv.JServConnection.processRequest(

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