/usr/local/lib/python3.10/site-packages/luigi/worker.py  701 Luigi unexpected framework error while scheduling MyTask()
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/luigi/worker.py", line 796, in add
    current = queue.get()
  File "<string>", line 2, in get
  File "/usr/local/lib/python3.10/multiprocessing/managers.py", line 833, in _callmethod
    raise convert_to_error(kind, result)
multiprocessing.managers.RemoteError:
---------------------------------------------------------------------------
Unserializable message: Traceback (most recent call last):
  File "/usr/local/lib/python3.10/multiprocessing/managers.py", line 308, in serve_client
    send(msg)
  File "/usr/local/lib/python3.10/multiprocessing/connection.py", line 206, in send
    self._send_bytes(_ForkingPickler.dumps(obj))
  File "/usr/local/lib/python3.10/multiprocessing/reduction.py", line 51, in dumps
    cls(buf, protocol).dump(obj)
TypeError: cannot pickle '_thread.lock' object