AppEngine misbehaving in the authentication flow

[vitorguidi]

Exception on / [GET]
Traceback (most recent call last):
  File "/srv/libs/auth.py", line 217, in decode_claims
    return auth.verify_session_cookie(session_cookie, check_revoked=True)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/firebase_admin/auth.py", line 275, in verify_session_cookie
    client._check_jwt_revoked_or_disabled(
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/firebase_admin/_auth_client.py", line 758, in _check_jwt_revoked_or_disabled
    raise exc_type('The Firebase {0} has been revoked.'.format(label))
firebase_admin._token_gen.RevokedSessionCookieError: The Firebase session cookie has been revoked.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/srv/handlers/base_handler.py", line 278, in dispatch_request
    return super().dispatch_request(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/flask/views.py", line 188, in dispatch_request
    return current_app.ensure_sync(meth)(**kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/libs/handler.py", line 384, in wrapper
    response = make_response(func(self, *args, **kwargs))
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/handlers/testcase_list.py", line 185, in get
    result, params = get_result()
                     ^^^^^^^^^^^^
  File "/srv/handlers/testcase_list.py", line 119, in get_result
    crash_access.add_scope(query, params, 'security_flag', 'job_type',
  File "/srv/libs/crash_access.py", line 85, in add_scope
    scope = get_scope()
            ^^^^^^^^^^^
  File "/srv/libs/crash_access.py", line 51, in get_scope
    is_privileged = access.has_access(need_privileged_access=True)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/libs/access.py", line 81, in has_access
    result = get_access(
             ^^^^^^^^^^^
  File "/srv/libs/access.py", line 91, in get_access
    if auth.is_current_user_admin():
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 62, in is_current_user_admin
    user = get_current_user()
           ^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 163, in get_current_user
    decoded_claims = decode_claims(get_session_cookie())
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 218, in decode_claims
    except (ValueError, auth.AuthError):
                        ^^^^^^^^^^^^^^
AttributeError: module 'firebase_admin.auth' has no attribute 'AuthError'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/srv/libs/auth.py", line 217, in decode_claims
    return auth.verify_session_cookie(session_cookie, check_revoked=True)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/firebase_admin/auth.py", line 275, in verify_session_cookie
    client._check_jwt_revoked_or_disabled(
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/firebase_admin/_auth_client.py", line 758, in _check_jwt_revoked_or_disabled
    raise exc_type('The Firebase {0} has been revoked.'.format(label))
firebase_admin._token_gen.RevokedSessionCookieError: The Firebase session cookie has been revoked.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/srv/handlers/base_handler.py", line 253, in handle_exception
    return self.render('error.html', values, status)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/handlers/base_handler.py", line 197, in render
    if not auth.is_current_user_admin() else None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 62, in is_current_user_admin
    user = get_current_user()
           ^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 163, in get_current_user
    decoded_claims = decode_claims(get_session_cookie())
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 218, in decode_claims
    except (ValueError, auth.AuthError):
                        ^^^^^^^^^^^^^^
AttributeError: module 'firebase_admin.auth' has no attribute 'AuthError'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/srv/libs/auth.py", line 217, in decode_claims
    return auth.verify_session_cookie(session_cookie, check_revoked=True)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/firebase_admin/auth.py", line 275, in verify_session_cookie
    client._check_jwt_revoked_or_disabled(
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/firebase_admin/_auth_client.py", line 758, in _check_jwt_revoked_or_disabled
    raise exc_type('The Firebase {0} has been revoked.'.format(label))
firebase_admin._token_gen.RevokedSessionCookieError: The Firebase session cookie has been revoked.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/flask/app.py", line 2525, in wsgi_app
    response = self.full_dispatch_request()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/flask/app.py", line 1822, in full_dispatch_request
    rv = self.handle_user_exception(e)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/flask/app.py", line 1820, in full_dispatch_request
    rv = self.dispatch_request()
         ^^^^^^^^^^^^^^^^^^^^^^^
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/flask/app.py", line 1796, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/flask/views.py", line 107, in view
    return current_app.ensure_sync(self.dispatch_request)(**kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/handlers/base_handler.py", line 280, in dispatch_request
    return self.handle_exception(exception)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/handlers/base_handler.py", line 255, in handle_exception
    self.handle_exception_exception()
  File "/srv/handlers/base_handler.py", line 266, in handle_exception_exception
    return self.render('error.html', values, 500)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/handlers/base_handler.py", line 197, in render
    if not auth.is_current_user_admin() else None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 62, in is_current_user_admin
    user = get_current_user()
           ^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 163, in get_current_user
    decoded_claims = decode_claims(get_session_cookie())
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/libs/auth.py", line 218, in decode_claims
    except (ValueError, auth.AuthError):
                        ^^^^^^^^^^^^^^
AttributeError: module 'firebase_admin.auth' has no attribute 'AuthError'

This caused a 500 internal error screen to show up. Managed to get back by clearing cookies/cache