[BUG] Server Error (500) relating to github get_user_by_id (UnknownObjectException)

[mkst]

Describe the bug

500 error when trying to load a particular scratch that is found on the 2nd page of preset 6.

It appears as if the scratch belongs to a github user that no longer exists.

07:00:21 DEBUG Starting new HTTPS connection (1): api.github.com:443
07:00:21 DEBUG https://api.github.com:443 "GET /user/149795111 HTTP/1.1" 401 80
07:00:42 DEBUG Starting new HTTPS connection (1): api.github.com:443
07:00:42 DEBUG https://api.github.com:443 "GET /user/149795111 HTTP/1.1" 404 105
07:00:42 ERROR Internal Server Error: /api/scratch
Traceback (most recent call last):
  File "/var/www/decomp.me/repo/backend/coreapp/models/github.py", line 63, in details
    details = Github(self.access_token).get_user_by_id(self.github_id)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/github/MainClass.py", line 325, in get_user_by_id
    headers, data = self.__requester.requestJsonAndCheck("GET", f"/user/{user_id}")
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/github/Requester.py", line 494, in requestJsonAndCheck
    return self.__check(*self.requestJson(verb, url, parameters, headers, input, self.__customConnection(url)))
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/github/Requester.py", line 525, in __check
    raise self.createException(status, responseHeaders, data)
github.GithubException.BadCredentialsException: 401 {"message": "Bad credentials", "documentation_url": "https://docs.github.com/rest"}

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/django/core/handlers/exception.py", line 55, in inner
    response = get_response(request)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/django/core/handlers/base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/sentry_sdk/integrations/django/views.py", line 84, in sentry_wrapped_callback
    return callback(request, *args, **kwargs)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/django/views/decorators/csrf.py", line 65, in _view_wrapper
    return view_func(request, *args, **kwargs)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/mixins.py", line 43, in list
    return self.get_paginated_response(serializer.data)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/serializers.py", line 768, in data
    ret = super().data
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/serializers.py", line 253, in data
    self._data = self.to_representation(self.instance)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/serializers.py", line 686, in to_representation
    return [
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/serializers.py", line 687, in <listcomp>
    self.child.to_representation(item) for item in iterable
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/rest_framework/serializers.py", line 522, in to_representation
    ret[field.field_name] = field.to_representation(attribute)
  File "/var/www/decomp.me/repo/backend/coreapp/serializers.py", line 79, in to_representation
    return serialize_profile(self.context["request"], profile, small=True)
  File "/var/www/decomp.me/repo/backend/coreapp/serializers.py", line 42, in serialize_profile
    github_details = github.details() if github else None
  File "/var/www/decomp.me/repo/backend/coreapp/models/github.py", line 80, in details
    details = Github().get_user_by_id(self.github_id)
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/github/MainClass.py", line 325, in get_user_by_id
    headers, data = self.__requester.requestJsonAndCheck("GET", f"/user/{user_id}")
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/github/Requester.py", line 494, in requestJsonAndCheck
    return self.__check(*self.requestJson(verb, url, parameters, headers, input, self.__customConnection(url)))
  File "/home/ethteck/.cache/pypoetry/virtualenvs/backend-xRJ-wtRq-py3.10/lib/python3.10/site-packages/github/Requester.py", line 525, in __check
    raise self.createException(status, responseHeaders, data)
github.GithubException.UnknownObjectException: 404 {"message": "Not Found", "documentation_url": "https://docs.github.com/rest/users/users#get-a-user"}

To Reproduce

1. go to https://decomp.me/api/scratch?preset=6&page_size=30
2. click "Next" an wait for the 500.

Expected behavior
Page should load correctly.