Discord Login issue with redis

[acocalypso]

Login with Discord is sometimes not working.

File "/home/aco/OSM-premium/rocketmad/app.py", line 607, in auth
    sessions = get_sessions(r)
  File "/home/aco/OSM-premium/rocketmad/utils.py", line 1319, in get_sessions
    data = pickle.loads(redis_server.get(key))
TypeError: a bytes-like object is required, not 'NoneType'
2021-08-08 14:17:54,887 [     DummyThread-1][           app][   ERROR] Exception on /auth/discord [GET]
Traceback (most recent call last):
  File "/home/aco/osm_env/lib/python3.8/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/aco/osm_env/lib/python3.8/site-packages/flask/app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/aco/osm_env/lib/python3.8/site-packages/flask/app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/aco/osm_env/lib/python3.8/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/home/aco/osm_env/lib/python3.8/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/aco/osm_env/lib/python3.8/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/aco/OSM-premium/rocketmad/app.py", line 607, in auth
    sessions = get_sessions(r)
  File "/home/aco/OSM-premium/rocketmad/utils.py", line 1319, in  get_sessions
    data = pickle.loads(redis_server.get(key))
TypeError: a bytes-like object is required, not 'NoneType'

Flushing redis db is a temp solution but this should be handled.