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

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via GitHub by damithc
, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at teammates.logic.core.FeedbackSessionsLogic.copyFeedbackSession(FeedbackSessionsLogic.java:140)
at teammates.logic.api.Logic.copyFeedbackSession(Logic.java:1341)
at teammates.ui.controller.InstructorFeedbackCopyAction.execute(InstructorFeedbackCopyAction.java:38)
at teammates.ui.controller.Action.executeAndPostProcess(Action.java:344)
at teammates.ui.controller.ControllerServlet.doPost(ControllerServlet.java:64)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at teammates.storage.datastore.DatastoreFilter.doFilter(DatastoreFilter.java:29)

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