2019-02-18 17:13:00,992 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2019-02-18 17:18:36,708 - octoprint.util.comm - INFO - Finished in 1673.886 s. Approx. transfer rate of 100.283 lines/s or 9.972 ms per line
2019-02-18 17:18:36,711 - octoprint.util.comm - INFO - Changing monitoring state from "Printing" to "Operational"
2019-02-18 17:18:36,717 - octoprint.filemanager.analysis - INFO - Starting analysis of local:3DBenchy.gcode
2019-02-18 17:18:36,722 - octoprint.filemanager.analysis - INFO - Invoking analysis command: /home/pi/Downloads/OctoPrint/venv/bin/python2 -m octoprint analysis gcode --speed-x=6000 --speed-y=4200 --max-t=10 --throttle=0.0 --throttle-lines=100 /home/pi/.octoprint/uploads/3DBenchy.gcode
2019-02-18 17:19:05,153 - octoprint.filemanager.analysis - INFO - Analysis of entry local:3DBenchy.gcode finished, needed 28.44s
2019-02-18 17:22:26,814 - octoprint.util.comm - INFO - Changing monitoring state from "Operational" to "Printing from SD"
2019-02-18 17:22:26,825 - octoprint.plugin - ERROR - Error while calling plugin tracking
Traceback (most recent call last):
  File "/home/pi/Downloads/OctoPrint/venv/local/lib/python2.7/site-packages/octoprint/plugin/__init__.py", line 230, in call_plugin
    result = getattr(plugin, method)(*args, **kwargs)
  File "/home/pi/Downloads/OctoPrint/venv/lib/python2.7/site-packages/octoprint/plugins/tracking/__init__.py", line 119, in on_event
    self._track_printjob_event(event, payload)
  File "/home/pi/Downloads/OctoPrint/venv/lib/python2.7/site-packages/octoprint/plugins/tracking/__init__.py", line 237, in _track_printjob_event
    sha.update(self._settings.get([b"unique_id"]))
TypeError: update() argument 1 must be string or buffer, not None
2019-02-18 17:22:40,770 - octoprint.util.comm - INFO - Printer seems to support the busy protocol, will adjust timeouts and set busy interval accordingly
2019-02-18 17:23:07,896 - octoprint.util.comm - INFO - Telling the printer to set the busy interval to our "communicationBusy" timeout - 1s = 2s
2019-02-18 17:24:04,642 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:213.162.73.229
2019-02-18 17:24:04,850 - octoprint.server.util.flask - INFO - Passively logging in user ungutknut from ::ffff:213.162.73.229
2019-02-18 17:24:04,987 - octoprint.server.util.sockjs - INFO - User ungutknut logged in on the socket from client ::ffff:213.162.73.229
2019-02-18 17:28:00,994 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2019-02-18 17:40:30,222 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:62.23.117.19
2019-02-18 17:43:00,994 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2019-02-18 17:58:00,996 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2019-02-18 18:13:00,997 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2019-02-18 18:26:48,703 - octoprint.util.comm - INFO - Communication timeout while printing, trying to trigger response from printer.
2019-02-18 18:28:00,998 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2019-02-18 18:41:26,848 - octoprint.util.comm - INFO - Communication timeout while printing, trying to trigger response from printer.
2019-02-18 18:43:00,999 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2019-02-18 18:48:21,336 - octoprint.util.comm - INFO - Communication timeout while printing, trying to trigger response from printer.
2019-02-18 18:57:29,143 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:213.162.73.229