Server responds with 499 http code

Stack trace found:

[2021-04-30 16:24:50 +0000] [11] [ERROR] Error handling request
ht-league-ranking-api | Traceback (most recent call last):
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/gunicorn/workers/gthread.py", line 328, in handle_request
ht-league-ranking-api |     for item in respiter:
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/werkzeug/wsgi.py", line 506, in __next__
ht-league-ranking-api |     return self._next()
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/werkzeug/wrappers/base_response.py", line 45, in _iter_encoded
ht-league-ranking-api |     for item in iterable:
ht-league-ranking-api |   File "/ht-league-ranking-back/src/api_v2/task/helper.py", line 7, in stream_task_status
ht-league-ranking-api |     for message in pubsub.listen():
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/redis/client.py", line 3605, in listen
ht-league-ranking-api |     response = self.handle_message(self.parse_response(block=True))
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/redis/client.py", line 3505, in parse_response
ht-league-ranking-api |     response = self._execute(conn, conn.read_response)
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/redis/client.py", line 3479, in _execute
ht-league-ranking-api |     return command(*args, **kwargs)
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 739, in read_response
ht-league-ranking-api |     response = self._parser.read_response()
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 324, in read_response
ht-league-ranking-api |     raw = self._buffer.readline()
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 256, in readline
ht-league-ranking-api |     self._read_from_socket()
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 201, in _read_from_socket
ht-league-ranking-api |     raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
ht-league-ranking-api | redis.exceptions.ConnectionError: Connection closed by server.
ht-league-ranking-api | [2021-04-30 16:24:50 +0000] [9] [ERROR] Error handling request
ht-league-ranking-api | Traceback (most recent call last):
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/gunicorn/workers/gthread.py", line 328, in handle_request
ht-league-ranking-api |     for item in respiter:
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/werkzeug/wsgi.py", line 506, in __next__
ht-league-ranking-api |     return self._next()
ht-league-ranking-api |   File "/usr/local/lib/python3.8/site-packages/werkzeug/wrappers/base_response.py", line 45, in _iter_encoded
ht-league-ranking-api |     for item in iterable:
ht-league-ranking-api |   File "/ht-league-ranking-back/src/api_v2/task/helper.py", line 7, in stream_task_status
ht-league-ranking-api |     for message in pubsub.listen():

Maybe it's related to #49