error

2018-04-03 15:58:29,177 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-04-03 15:58:29,681 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-04-03 15:58:30,181 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-04-03 15:58:30,684 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-04-03 15:58:31,186 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-04-03 15:58:31,694 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-04-03 15:58:31,709 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-04-03 15:58:31,758 - octoprint.util.comm - INFO - Printer reports firmware name "Marlin 1.1.0-RC8 (Github)"
2018-04-03 15:58:41,348 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-04-03 15:58:41,356 - octoprint.plugins.helloworld - INFO - Printing started. Filament sensor enabled.
2018-04-03 15:58:41,403 - octoprint.plugin - ERROR - Error while calling plugin stats
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.6-py2.7.egg/octoprint/plugin/__init__.py", line 225, in call_plugin
    result = getattr(plugin, method)(*args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint_stats/__init__.py", line 450, in on_event
    sql = "INSERT INTO print_started (event_time, file, origin, bed_target, tool0_target, tool1_target) VALUES ('%s', '%s', '%s', %f, %f, %f)" % (datetime.datetime.tod$
TypeError: a float is required
2018-04-03 16:02:07,744 - octoprint.plugins.helloworld - DEBUG - Detected sensor [21] state [1]? !
2018-04-03 16:02:10,708 - octoprint.plugins.helloworld - DEBUG - Detected sensor [21] state [0]? !
2018-04-03 16:02:10,709 - octoprint.plugins.helloworld - DEBUG - Sensor [0]!
2018-04-03 16:02:10,715 - octoprint.plugins.helloworld - INFO - printer paused!!!