java.lang.NullPointerException

GitHub | damithc | 7 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at teammates.logic.core.FeedbackSessionsLogic.copyFeedbackSession()
  2. teammates.logic.core
    FeedbackSessionsLogic.copyFeedbackSession
    1. teammates.logic.core.FeedbackSessionsLogic.copyFeedbackSession(FeedbackSessionsLogic.java:140)
    1 frame
  3. teammates.logic.api
    Logic.copyFeedbackSession
    1. teammates.logic.api.Logic.copyFeedbackSession(Logic.java:1341)
    1 frame
  4. teammates.ui.controller
    ControllerServlet.doPost
    1. teammates.ui.controller.InstructorFeedbackCopyAction.execute(InstructorFeedbackCopyAction.java:38)
    2. teammates.ui.controller.Action.executeAndPostProcess(Action.java:344)
    3. teammates.ui.controller.ControllerServlet.doPost(ControllerServlet.java:64)
    3 frames
  5. JavaServlet
    HttpServlet.service
    1. javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    2. javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    2 frames
  6. Jetty Server
    ServletHandler$CachedChain.doFilter
    1. org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    2. org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
    2 frames
  7. teammates.storage.datastore
    DatastoreFilter.doFilter
    1. teammates.storage.datastore.DatastoreFilter.doFilter(DatastoreFilter.java:29)
    1 frame
  8. Jetty Server
    ServletHandler$CachedChain.doFilter
    1. org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    1 frame
  9. Google AppEngine
    AppstatsFilter.doFilter
    1. com.google.appengine.tools.appstats.AppstatsFilter.doFilter(AppstatsFilter.java:143)
    1 frame