pi@octopi:~ $ oprint/bin/octoprint serve --safe
2018-09-26 21:05:51,162 - octoprint.startup - INFO - ******************************************************************************
2018-09-26 21:05:51,166 - octoprint.startup - INFO - Starting OctoPrint 1.3.9
2018-09-26 21:05:51,167 - octoprint.startup - INFO - Starting in SAFE MODE. Third party plugins will be disabled!
2018-09-26 21:05:51,169 - octoprint.startup - INFO - ******************************************************************************
2018-09-26 21:05:51,248 - octoprint.util.connectivity_checker - INFO - Connectivity changed from offline to online
2018-09-26 21:05:51,256 - octoprint.startup - INFO - Blacklist processing done
2018-09-26 21:05:51,332 - octoprint.plugin.core - INFO - Loading plugins from /home/pi/oprint/lib/python2.7/site-packages/octoprint/plugins, /home/pi/.octoprint/plugins and installed plugin packages...
2018-09-26 21:05:52,119 - octoprint.plugin.core - ERROR - Error loading plugin softwareupdate
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/plugin/core.py", line 847, in _import_plugin
    instance = imp.load_module(key, f, filename, description)
  File "/home/pi/oprint/lib/python2.7/site-packages/octoprint/plugins/softwareupdate/__init__.py", line 26, in <module>
    from octoprint.server.util.flask import restricted_access, with_revalidation_checking, check_etag
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/__init__.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/__init__.py", line 3, in <module>
    from .router import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/router.py", line 11, in <module>
    from octoprint.vendor.sockjs.tornado import transports, session, sessioncontainer, static, stats, proto
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/__init__.py", line 3, in <module>
    import octoprint.vendor.sockjs.tornado.transports.pollingbase
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/pollingbase.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import basehandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/basehandler.py", line 13, in <module>
    from tornado.web import asynchronous, RequestHandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/tornado/web.py", line 66, in <module>
    import gzip
ValueError: bad marshal data (string ref out of range)
2018-09-26 21:05:52,156 - octoprint.plugin.core - ERROR - Error loading plugin action_command_prompt
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/plugin/core.py", line 847, in _import_plugin
    instance = imp.load_module(key, f, filename, description)
  File "/home/pi/oprint/lib/python2.7/site-packages/octoprint/plugins/action_command_prompt/__init__.py", line 9, in <module>
    from octoprint.server import user_permission
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/__init__.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/__init__.py", line 3, in <module>
    from .router import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/router.py", line 11, in <module>
    from octoprint.vendor.sockjs.tornado import transports, session, sessioncontainer, static, stats, proto
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/__init__.py", line 3, in <module>
    import octoprint.vendor.sockjs.tornado.transports.pollingbase
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/pollingbase.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import basehandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/basehandler.py", line 13, in <module>
    from tornado.web import asynchronous, RequestHandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/tornado/web.py", line 66, in <module>
    import gzip
ValueError: bad marshal data (string ref out of range)
2018-09-26 21:05:52,199 - octoprint.plugin.core - ERROR - Error loading plugin logging
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/plugin/core.py", line 847, in _import_plugin
    instance = imp.load_module(key, f, filename, description)
  File "/home/pi/oprint/lib/python2.7/site-packages/octoprint/plugins/logging/__init__.py", line 10, in <module>
    from octoprint.server import NO_CONTENT, admin_permission
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/__init__.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/__init__.py", line 3, in <module>
    from .router import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/router.py", line 11, in <module>
    from octoprint.vendor.sockjs.tornado import transports, session, sessioncontainer, static, stats, proto
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/__init__.py", line 3, in <module>
    import octoprint.vendor.sockjs.tornado.transports.pollingbase
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/pollingbase.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import basehandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/basehandler.py", line 13, in <module>
    from tornado.web import asynchronous, RequestHandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/tornado/web.py", line 66, in <module>
    import gzip
ValueError: bad marshal data (string ref out of range)
2018-09-26 21:05:52,336 - octoprint.plugin.core - ERROR - Error loading plugin pluginmanager
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/plugin/core.py", line 847, in _import_plugin
    instance = imp.load_module(key, f, filename, description)
  File "/home/pi/oprint/lib/python2.7/site-packages/octoprint/plugins/pluginmanager/__init__.py", line 14, in <module>
    from octoprint.server.util.flask import restricted_access, with_revalidation_checking, check_etag
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/__init__.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/__init__.py", line 3, in <module>
    from .router import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/router.py", line 11, in <module>
    from octoprint.vendor.sockjs.tornado import transports, session, sessioncontainer, static, stats, proto
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/__init__.py", line 3, in <module>
    import octoprint.vendor.sockjs.tornado.transports.pollingbase
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/pollingbase.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import basehandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/basehandler.py", line 13, in <module>
    from tornado.web import asynchronous, RequestHandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/tornado/web.py", line 66, in <module>
    import gzip
ValueError: bad marshal data (string ref out of range)
2018-09-26 21:05:52,398 - octoprint.plugin.core - ERROR - Error loading plugin announcements
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/plugin/core.py", line 847, in _import_plugin
    instance = imp.load_module(key, f, filename, description)
  File "/home/pi/oprint/lib/python2.7/site-packages/octoprint/plugins/announcements/__init__.py", line 18, in <module>
    import feedparser
  File "/home/pi/oprint/local/lib/python2.7/site-packages/feedparser.py", line 161, in <module>
    import gzip
ValueError: bad marshal data (string ref out of range)
2018-09-26 21:05:52,538 - octoprint.plugin.core - ERROR - Error loading plugin printer_safety_check
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/plugin/core.py", line 847, in _import_plugin
    instance = imp.load_module(key, f, filename, description)
  File "/home/pi/oprint/lib/python2.7/site-packages/octoprint/plugins/printer_safety_check/__init__.py", line 10, in <module>
    from octoprint.server import user_permission
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/__init__.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/__init__.py", line 3, in <module>
    from .router import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/router.py", line 11, in <module>
    from octoprint.vendor.sockjs.tornado import transports, session, sessioncontainer, static, stats, proto
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/__init__.py", line 3, in <module>
    import octoprint.vendor.sockjs.tornado.transports.pollingbase
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/pollingbase.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import basehandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/basehandler.py", line 13, in <module>
    from tornado.web import asynchronous, RequestHandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/tornado/web.py", line 66, in <module>
    import gzip
ValueError: bad marshal data (string ref out of range)
2018-09-26 21:05:54,003 - octoprint.plugin.core - INFO - Found 8 plugin(s) providing 5 mixin implementations, 1 hook handlers
2018-09-26 21:05:54,227 - octoprint.cli.server - ERROR - Uncaught exception
Traceback (most recent call last):
  File "oprint/bin/octoprint", line 11, in <module>
    load_entry_point('OctoPrint==1.3.9', 'console_scripts', 'octoprint')()
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/__init__.py", line 599, in main
    octo(args=args, prog_name="octoprint", auto_envvar_prefix="OCTOPRINT")
  File "/home/pi/oprint/local/lib/python2.7/site-packages/click/core.py", line 716, in __call__
    return self.main(*args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/click/core.py", line 1060, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/pi/oprint/local/lib/python2.7/site-packages/click/core.py", line 889, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/cli/server.py", line 188, in serve_command
    ignore_blacklist)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/cli/server.py", line 97, in run_server
    from octoprint.server import Server
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/__init__.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/__init__.py", line 3, in <module>
    from .router import SockJSRouter
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/router.py", line 11, in <module>
    from octoprint.vendor.sockjs.tornado import transports, session, sessioncontainer, static, stats, proto
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/__init__.py", line 3, in <module>
    import octoprint.vendor.sockjs.tornado.transports.pollingbase
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/transports/pollingbase.py", line 9, in <module>
    from octoprint.vendor.sockjs.tornado import basehandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/vendor/sockjs/tornado/basehandler.py", line 13, in <module>
    from tornado.web import asynchronous, RequestHandler
  File "/home/pi/oprint/local/lib/python2.7/site-packages/tornado/web.py", line 66, in <module>
    import gzip
ValueError: bad marshal data (string ref out of range)