Exception in thread Thread-3:
Traceback (most recent call last):
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "main.py", line 1463, in apply_to_design_jobs_loop
    handle_unknown_errors(additional_message="Sendout loop failed")
  File "main.py", line 1458, in apply_to_design_jobs_loop
    apply_to_design_jobs()
  File "main.py", line 929, in apply_to_design_jobs
    create_list_of_jobs_to_apply_from_loop()
  File "main.py", line 875, in create_list_of_jobs_to_apply_from_loop
    jobs = list(jobs)
  File "/usr/local/lib/python3.8/dist-packages/pymongo/cursor.py", line 1207, in next
    if len(self.__data) or self._refresh():
  File "/usr/local/lib/python3.8/dist-packages/pymongo/cursor.py", line 1100, in _refresh
    self.__session = self.__collection.database.client._ensure_session()
  File "/usr/local/lib/python3.8/dist-packages/pymongo/mongo_client.py", line 1816, in _ensure_session
    return self.__start_session(True, causal_consistency=False)
  File "/usr/local/lib/python3.8/dist-packages/pymongo/mongo_client.py", line 1766, in __start_session
    server_session = self._get_server_session()
  File "/usr/local/lib/python3.8/dist-packages/pymongo/mongo_client.py", line 1802, in _get_server_session
    return self._topology.get_server_session()
  File "/usr/local/lib/python3.8/dist-packages/pymongo/topology.py", line 485, in get_server_session
    self._select_servers_loop(
  File "/usr/local/lib/python3.8/dist-packages/pymongo/topology.py", line 215, in _select_servers_loop
    raise ServerSelectionTimeoutError(
pymongo.errors.ServerSelectionTimeoutError: 127.0.0.1:27017: [Errno 111] Connection refused, Timeout: 30s, Topology Description: <TopologyDescription id: 605c1289358941c6bbf6aa88, topology_type: Single, servers: [<ServerDescription ('127.0.0.1', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('127.0.0.1:27017: [Errno 111] Connection refused')>]>
App stopped at 25 Mar 2021 06:33:45