Transition issue throws "Could not load FunctionProvider class" error

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      **Summary**

      Edit / Transition issue result into the following error

      Could not load FunctionProvider class
      It seems that you have tried to perform an illegal workflow operation.
      If you think this message is wrong, please contact your JIRA administrators.

            Assignee:
            Unassigned
            Reporter:
            Nursihah Amir (Inactive)
            Votes:
            9 Vote for this issue
            Watchers:
            25 Start watching this issue

              Created:
              Updated:
              Resolved: