2022-01-21 12:00:19,388 - octoprint.startup - INFO - ******************************************************************************
2022-01-21 12:00:19,389 - octoprint.startup - INFO - Starting OctoPrint 1.4.0
2022-01-21 12:00:19,389 - octoprint.startup - INFO - ******************************************************************************
2022-01-21 12:00:19,576 - octoprint.plugin.core - INFO - Loading plugins from /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins, /etc/octoprint/plugins and installed plugin packages...
2022-01-21 12:00:20,308 - octoprint.plugin.core - INFO - Plugin Pi Support Plugin did not pass check, not loading.
2022-01-21 12:00:20,393 - octoprint.plugins.octoprint.plugins.discovery - INFO - pybonjour is not installed, Zeroconf Discovery won't be available
2022-01-21 12:00:20,395 - octoprint.plugin.core - INFO - Found 14 plugin(s) providing 14 mixin implementations, 25 hook handlers
2022-01-21 12:00:20,468 - octoprint.server.heartbeat - INFO - Starting server heartbeat, 900.0s interval
2022-01-21 12:00:20,474 - octoprint.server - INFO - Intermediary server started
2022-01-21 12:00:20,474 - octoprint.plugin.core - INFO - Loading plugins from /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins, /etc/octoprint/plugins and installed plugin packages...
2022-01-21 12:00:20,479 - octoprint.plugin.core - INFO - Plugin Pi Support Plugin did not pass check, not loading.
2022-01-21 12:00:20,494 - octoprint.plugin.core - INFO - Found 14 plugin(s) providing 14 mixin implementations, 25 hook handlers
2022-01-21 12:00:20,517 - octoprint.filemanager.storage - INFO - Initializing the file metadata for /etc/octoprint/uploads...
2022-01-21 12:00:20,518 - octoprint.filemanager.storage - INFO - ... file metadata for /etc/octoprint/uploads initialized successfully.
2022-01-21 12:00:20,519 - octoprint.server - INFO - Added new permission from plugin action_command_prompt: PLUGIN_ACTION_COMMAND_PROMPT_INTERACT (needs: "Need(method='role', value='plugin_action_command_prompt_interact')")
2022-01-21 12:00:20,519 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_READ (needs: "Need(method='role', value='plugin_announcements_read')")
2022-01-21 12:00:20,519 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_MANAGE (needs: "Need(method='role', value='plugin_announcements_read'), Need(method='role', value='plugin_announcements_manage')")
2022-01-21 12:00:20,520 - octoprint.server - INFO - Added new permission from plugin appkeys: PLUGIN_APPKEYS_ADMIN (needs: "Need(method='role', value='plugin_appkeys_admin')")
2022-01-21 12:00:20,520 - octoprint.server - INFO - Added new permission from plugin backup: PLUGIN_BACKUP_ACCESS (needs: "Need(method='role', value='plugin_backup_access')")
2022-01-21 12:00:20,520 - octoprint.server - INFO - Added new permission from plugin logging: PLUGIN_LOGGING_MANAGE (needs: "Need(method='role', value='plugin_logging_manage')")
2022-01-21 12:00:20,520 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_MANAGE (needs: "Need(method='role', value='plugin_pluginmanager_manage')")
2022-01-21 12:00:20,520 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_INSTALL (needs: "Need(method='role', value='plugin_pluginmanager_install'), Need(method='role', value='plugin_pluginmanager_manage')")
2022-01-21 12:00:20,520 - octoprint.server - INFO - Added new permission from plugin printer_safety_check: PLUGIN_PRINTER_SAFETY_CHECK_DISPLAY (needs: "Need(method='role', value='plugin_printer_safety_check_display')")
2022-01-21 12:00:20,520 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_CHECK (needs: "Need(method='role', value='plugin_softwareupdate_check')")
2022-01-21 12:00:20,521 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_UPDATE (needs: "Need(method='role', value='plugin_softwareupdate_update')")
2022-01-21 12:00:21,161 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2022-01-21 12:00:21,727 - octoprint.util.pip - INFO - Version of pip is 20.1
2022-01-21 12:00:21,728 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/lib/python3/dist-packages (writable -> yes), --user flag needed -> no, virtual env -> no
2022-01-21 12:00:21,728 - octoprint.util.pip - INFO - ==> pip ok -> yes
2022-01-21 12:00:21,767 - octoprint.plugins.softwareupdate - INFO - Loaded version cache from disk
2022-01-21 12:00:21,773 - octoprint.plugin.core - INFO - Initialized 14 plugin implementation(s)
2022-01-21 12:00:21,776 - octoprint.plugin.core - INFO - 14 plugin(s) registered with the system:
|  Action Command Prompt Support (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/action_command_prompt
|  Announcement Plugin (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/announcements
|  Anonymous Usage Tracking (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/tracking
|  Application Keys Plugin (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/appkeys
|  Backup & Restore (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/backup
|  Core Wizard (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/corewizard
|  Discovery (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/discovery
|  Error Tracking (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/errortracking
|  Logging (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/logging
|  Login UI (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/loginui
|  Plugin Manager (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/pluginmanager
|  Printer Safety Check (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/printer_safety_check
|  Software Update (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/softwareupdate
|  Virtual Printer (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/virtual_printer
Prefix legend: ! = disabled, # = blacklisted, * = incompatible
2022-01-21 12:00:21,819 - octoprint.environment - INFO - Detected environment is Python 3.6.9 under Linux (linux). Details:
|  hardware:
|      cores: 2
|      freq: 3100.0
|      ram: 3946344448
|  os:
|      id: linux
|      platform: linux
|  python:
|      pip: '20.1'
|      version: 3.6.9
2022-01-21 12:00:21,883 - octoprint.server - INFO - Reset webasset folder /etc/octoprint/generated/webassets...
2022-01-21 12:00:21,970 - octoprint.server - INFO - Reset webasset folder /etc/octoprint/generated/.webassets-cache...
2022-01-21 12:00:22,152 - octoprint.server - INFO - Shutting down intermediary server...
2022-01-21 12:00:22,477 - octoprint.server - INFO - Intermediary server shut down
2022-01-21 12:00:22,479 - octoprint.events - INFO - Processing startup event, this is our first event
2022-01-21 12:00:22,479 - octoprint.events - INFO - Adding 0 events to queue that were held back before startup event
2022-01-21 12:00:22,479 - octoprint.filemanager - INFO - Adding backlog items from all storage types to analysis queue...
2022-01-21 12:00:22,480 - octoprint.server - INFO - Autoconnect on startup is configured, trying to connect to the printer...
2022-01-21 12:00:22,487 - octoprint.filemanager - INFO - Added 0 items from storage type "local" to analysis queue
2022-01-21 12:00:22,491 - octoprint.server - INFO - Trying to connect to configured serial port /dev/ttyUSB0
2022-01-21 12:00:22,499 - octoprint.server.util.watchdog - INFO - Running initial scan on watched folder...
2022-01-21 12:00:22,500 - octoprint.server.util.watchdog - INFO - ... initial scan done.
2022-01-21 12:00:22,502 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2022-01-21 12:00:22,502 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2022-01-21 12:00:22,505 - octoprint.plugins.discovery - INFO - Registered OctoPrint instance on 127.0.0.1localhost for SSDP
2022-01-21 12:00:22,506 - octoprint.server - INFO - Listening on http://0.0.0.0:5000 and http://[::]:5000
2022-01-21 12:00:22,577 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from disk, was still valid
2022-01-21 12:00:23,154 - octoprint.plugins.pluginmanager - INFO - Loaded notice data from disk, was still valid
2022-01-21 12:00:23,169 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2022-01-21 12:00:23,169 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/lib/python3/dist-packages (writable -> yes), --user flag needed -> no, virtual env -> no
2022-01-21 12:00:23,169 - octoprint.util.pip - INFO - ==> pip ok -> yes
2022-01-21 12:00:23,173 - octoprint.util.connectivity_checker - INFO - Connectivity changed from offline to online
2022-01-21 12:00:23,185 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from disk, was still valid
2022-01-21 12:00:23,557 - octoprint.server.preemptive_cache - INFO - Preemptively caching / (ui _default) for {'base_url': 'http://192.168.0.104/', 'path': '/', 'query_string': 'l10n=en'}
2022-01-21 12:00:23,564 - octoprint.plugins.pluginmanager - INFO - Loaded notice data from disk, was still valid
2022-01-21 12:00:26,154 - octoprint.server.preemptive_cache - INFO - ... done in 2.60s
2022-01-21 12:00:26,154 - octoprint.server.preemptive_cache - INFO - Preemptively caching / (ui _default) for {'base_url': 'http://192.168.0.104:5000/', 'path': '/', 'query_string': 'l10n=en'}
2022-01-21 12:00:26,404 - octoprint.server.preemptive_cache - INFO - ... done in 0.25s
2022-01-21 12:02:29,666 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.104
2022-01-21 12:02:29,761 - octoprint.server.util.flask - INFO - Passively logging in user liams from ::ffff:192.168.0.104
2022-01-21 12:02:29,762 - octoprint.access.users - INFO - Logged in user: liams
2022-01-21 12:02:30,860 - octoprint.server.util.sockjs - INFO - User liams logged in on the socket from client ::ffff:192.168.0.104
2022-01-21 12:02:44,281 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:192.168.0.104
2022-01-21 12:02:44,298 - octoprint.server.util.flask - INFO - Passively logging in user liams from ::ffff:192.168.0.104
2022-01-21 12:02:44,298 - octoprint.access.users - INFO - Logged in user: liams
2022-01-21 12:02:44,330 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.104
2022-01-21 12:02:44,344 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:192.168.0.104
2022-01-21 12:02:44,758 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.104
2022-01-21 12:02:44,779 - octoprint.server.util.flask - INFO - Passively logging in user liams from ::ffff:192.168.0.104
2022-01-21 12:02:44,780 - octoprint.access.users - INFO - Logged in user: liams
2022-01-21 12:02:45,386 - octoprint.server.util.sockjs - INFO - User liams logged in on the socket from client ::ffff:192.168.0.104
2022-01-21 12:03:15,858 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:192.168.0.104
2022-01-21 12:03:15,867 - octoprint.server.util.flask - INFO - Passively logging in user liams from ::ffff:192.168.0.104
2022-01-21 12:03:15,868 - octoprint.access.users - INFO - Logged in user: liams
2022-01-21 12:03:16,333 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.104
2022-01-21 12:03:16,362 - octoprint.server.util.flask - INFO - Passively logging in user liams from ::ffff:192.168.0.104
2022-01-21 12:03:16,362 - octoprint.access.users - INFO - Logged in user: liams
2022-01-21 12:03:17,182 - octoprint.server.util.sockjs - INFO - User liams logged in on the socket from client ::ffff:192.168.0.104
2022-01-21 12:04:33,101 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:192.168.0.104