Firmware update dialog on printer - timeout issue

octoprint.log

2017-03-17 21:16:26,955 - octoprint.util.comm - INFO - No response from printer after 6 consecutive communication timeouts, considering it dead.
2017-03-17 21:16:26,970 - octoprint.plugins.TestPlugin - INFO - Event: Error, Payload: {'error': 'Too many consecutive timeouts, printer still connected and alive?'}
2017-03-17 21:16:34,913 - octoprint.events - ERROR - Got an exception while sending event MetadataStatisticsUpdated (Payload: {'path': u'bookmark_toothless_12.gcode', 'storage': 'local'}) to <bound method Printer._on_event_MetadataStatisticsUpdated of <octoprint.printer.standard.Printer object at 0x75608e70>>
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.2-py2.7.egg/octoprint/events.py", line 151, in _work
    listener(event, payload)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.2-py2.7.egg/octoprint/printer/standard.py", line 164, in _on_event_MetadataStatisticsUpdated
    self._setJobData(self._selectedFile["filename"],
TypeError: 'NoneType' object has no attribute '__getitem__'
2017-03-17 21:16:34,924 - octoprint.plugins.TestPlugin - INFO - Event: Disconnected, Payload: {}
2017-03-17 21:16:35,216 - octoprint.plugins.TestPlugin - INFO - Event: PrintFailed, Payload: {}