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Plugin Load Failure

See original GitHub issue

Environment

Python version: 3.8.5
Nautobot version: 1.0.0b1

Steps to Reproduce

pip install nautobot-netbox-importer
Enable the plugin in nautobot_config.py: PLUGINS = ["nautobot_netbox_importer"]
sudo systemctl restart nautobot
Browse to the nautobot web User Interface

Expected Behavior

Expected to see the nautobot landing page on the UI

Observed Behavior

Internal Server Error displayed on UI

Gunicorn reports errors in the nautobot logs.

(nautobot) nautobot@ubuntu-20-04:~$ sudo journalctl -eu nautobot.service
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/core/handlers/wsgi.py", line 133, in __call__
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     response = self.get_response(request)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/core/handlers/base.py", line 130, in get_response
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     response = self._middleware_chain(request)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/core/handlers/exception.py", line 49, in inner
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     response = response_for_exception(request, exc)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/core/handlers/exception.py", line 103, in response_for_exception
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/core/handlers/exception.py", line 141, in handle_uncaught_exception
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     callback, param_dict = resolver.resolve_error_handler(500)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/urls/resolvers.py", line 602, in resolve_error_handler
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     callback = getattr(self.urlconf_module, 'handler%s' % view_type, None)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/utils/functional.py", line 48, in __get__
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     res = instance.__dict__[self.name] = self.func(instance)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/urls/resolvers.py", line 582, in urlconf_module
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     return import_module(self.urlconf_name)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     return _bootstrap._gcd_import(name[level:], package, level)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "<frozen importlib._bootstrap>", line 991, in _find_and_load
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "<frozen importlib._bootstrap_external>", line 783, in exec_module
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/nautobot/core/urls.py", line 12, in <module>
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     from nautobot.extras.plugins.urls import (
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/nautobot/extras/plugins/urls.py", line 32, in <module>
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     app = apps.get_app_config(plugin_name)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:   File "/opt/nautobot/lib/python3.8/site-packages/django/apps/registry.py", line 163, in get_app_config
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]:     raise LookupError(message)
Mar 05 11:52:52 ubuntu-20-04 gunicorn[25549]: LookupError: No installed app with label 'nautobot_netbox_importer'.