2020-01-16 11:59:56,001 - octoprint.server.util.sockjs - INFO - Client connection closed: 172.16.216.76
2020-01-16 11:59:56,028 - octoprint.server - INFO - --- Log roll over detected ---------------------------------------------------
2020-01-16 11:59:56,029 - octoprint.server - INFO - OctoPrint 1.3.12
2020-01-16 11:59:56,036 - octoprint.plugin.core - INFO - 14 plugin(s) registered with the system:
|  Action Command Prompt Support (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/action_command_prompt
|  Announcement Plugin (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/announcements
|  Anonymous Usage Tracking (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/tracking
|  Application Keys Plugin (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/appkeys
|  Backup & Restore (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/backup
|  Core Wizard (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/corewizard
|  Discovery (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/discovery
|  Error Tracking (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/errortracking
|  Force Login (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/forcelogin
|  Logging (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/logging
|  Plugin Manager (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/pluginmanager
|  Printer Safety Check (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/printer_safety_check
|  Software Update (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/softwareupdate
|  Virtual Printer (bundled) = /home/octo/OctoPrint/venv/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/plugins/virtual_printer
2020-01-16 11:59:56,063 - octoprint.environment - INFO - Detected environment is Python 2.7.16 under Linux (linux2). Details:
|  hardware:
|    cores: 4
|    freq: 1008.0
|    ram: 515002368
|  os:
|    id: linux
|    platform: linux2
|  python:
|    pip: 19.3.1
|    version: 2.7.16
|    virtualenv: /home/octo/OctoPrint/venv
2020-01-16 11:59:56,064 - octoprint.server - INFO - ------------------------------------------------------------------------------
2020-01-16 12:07:44,459 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2020-01-16 12:22:44,461 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2020-01-16 12:37:44,463 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2020-01-16 12:52:44,470 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2020-01-16 13:07:44,478 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2020-01-16 13:11:02,419 - octoprint.util.comm - ERROR - Unexpected error while reading from serial port
Traceback (most recent call last):
  File "/home/octo/OctoPrint/venv/local/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/util/comm.py", line 2793, in _readline
    ret = self._serial.readline()
  File "/home/octo/OctoPrint/venv/local/lib/python2.7/site-packages/OctoPrint-1.3.12-py2.7.egg/octoprint/util/comm.py", line 4932, in readline
    c = self.read(1)
  File "/home/octo/OctoPrint/venv/local/lib/python2.7/site-packages/pyserial-3.4-py2.7.egg/serial/serialposix.py", line 501, in read
    'device reports readiness to read but returned no data '
SerialException: device reports readiness to read but returned no data (device disconnected or multiple access on port?)
2020-01-16 13:11:02,424 - octoprint.util.comm - ERROR - Please see https://faq.octoprint.org/serialerror for possible reasons of this.
2020-01-16 13:11:02,529 - octoprint.util.comm - INFO - Changing monitoring state from "Printing" to "Offline (Error: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:2793)"
2020-01-16 13:11:04,400 - tornado.access - WARNING - 409 GET /api/printer (172.16.216.76) 14.31ms
2020-01-16 13:11:14,433 - tornado.access - WARNING - 409 GET /api/printer (172.16.216.76) 25.06ms
2020-01-16 13:11:24,429 - tornado.access - WARNING - 409 GET /api/printer (172.16.216.76) 24.88ms
2020-01-16 13:11:34,430 - tornado.access - WARNING - 409 GET /api/printer (172.16.216.76) 24.97ms
2020-01-16 13:11:44,432 - tornado.access - WARNING - 409 GET /api/printer (172.16.216.76) 25.75ms
2020-01-16 13:11:54,427 - tornado.access - WARNING - 409 GET /api/printer (172.16.216.76) 21.01ms
2020-01-16 13:12:04,449 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial port"
2020-01-16 13:12:04,487 - tornado.access - WARNING - 409 GET /api/printer (172.16.216.76) 15.08ms
2020-01-16 13:12:04,756 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial port" to "Opening serial port"
2020-01-16 13:12:04,769 - octoprint.util.comm - INFO - Changing monitoring state from "Opening serial port" to "Connecting"
2020-01-16 13:12:04,784 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2020-01-16 13:12:04,797 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2020-01-16 13:12:05,665 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2020-01-16 13:12:06,301 - octoprint.util.comm - INFO - Changing monitoring state from "Connecting" to "Operational"
2020-01-16 13:12:06,315 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2020-01-16 13:12:06,455 - octoprint.util.comm - INFO - Printer reports firmware name "Marlin Ver 1.70.1 (Creality3D)"
2020-01-16 13:12:06,572 - octoprint.util.comm - INFO - Firmware states that it supports temperature autoreporting
2020-01-16 13:12:22,386 - octoprint.printer.standard.job - INFO - Print job selected - origin: local, path: bottom.gcode, owner: octo, user: octo