Burndown Chart flat line loops throughout Sprint - What causes this?

[Thomas Geiger]

I am relatively new to JIRA.  We have been using it for a few months.  Today when I llook at the burndown, I see a flat line that extends all the way to the end of the sprint scope and back again.  I have looked at the Work Log entries and don't see any problems or obvious issues.  Is there a known reason that would cause this?

Thanks,

Tom

[Thomas Geiger]

Problem has been resolved.  Careful re-inspection of work logs discovered that one work log had been logged to a date outside of the Sprint.  Editied the work log to correct the problem.  Probably was an easy way to find this but ended up looking at all logged time one by one to find it.  Sorry if I wasted anyone's time.