RuntimeError: dictionary changed size during iteration

[DogsTailFarmer]

version = "1.3.6b3"

[2023-08-17 20:35:43,285: ERROR] Unexpected [RuntimeError] raised by servicer method [/martin.Martin/StopStream]
Traceback (most recent call last):
  File "src/python/grpcio/grpc/_cython/_cygrpc/aio/server.pyx.pxi", line 682, in grpc._cython.cygrpc._handle_excepti
ons
  File "src/python/grpcio/grpc/_cython/_cygrpc/aio/server.pyx.pxi", line 796, in _handle_rpc
  File "src/python/grpcio/grpc/_cython/_cygrpc/aio/server.pyx.pxi", line 547, in _handle_unary_unary_rpc
  File "src/python/grpcio/grpc/_cython/_cygrpc/aio/server.pyx.pxi", line 404, in _finish_handler_with_unary_response
  File "/home/ubuntu/.local/lib/python3.10/site-packages/exchanges_wrapper/exch_srv.py", line 826, in StopStream
    await stop_stream(client, request.trade_id)
  File "/home/ubuntu/.local/lib/python3.10/site-packages/exchanges_wrapper/exch_srv.py", line 846, in stop_stream
    await client.stop_events_listener(trade_id)
  File "/home/ubuntu/.local/lib/python3.10/site-packages/exchanges_wrapper/client.py", line 183, in stop_events_list
ener
    await self.user_wss_session.stop()
  File "/home/ubuntu/.local/lib/python3.10/site-packages/crypto_ws_api/ws_session.py", line 429, in stop
    for ws in self.user_wss.values():
RuntimeError: dictionary changed size during iteration