Seafile-client stuck problem

I’m using Docker with the image flrnnc/seafile-client:9.0.7. The synchronization got stuck after a while, and Docker is showing an error. Restarting doesn’t help. The log show following error:

seafile-client-1 | Traceback (most recent call last):
seafile-client-1 | File “/usr/bin/seaf-cli”, line 1052, in
seafile-client-1 | main()
seafile-client-1 | File “/usr/bin/seaf-cli”, line 1048, in main
seafile-client-1 | args.func(args)
seafile-client-1 | File “/usr/bin/seaf-cli”, line 746, in seaf_sync
seafile-client-1 | seafile_rpc.clone(repo,
seafile-client-1 | File “/usr/lib/python3/dist-packages/pysearpc/client.py”, line 127, in newfunc
seafile-client-1 | return fret(ret_str)
seafile-client-1 | ^^^^^^^^^^^^^
seafile-client-1 | File “/usr/lib/python3/dist-packages/pysearpc/client.py”, line 25, in _fret_string
seafile-client-1 | raise SearpcError(dicts[‘err_msg’])
seafile-client-1 | pysearpc.common.SearpcError: Task is already in progress
seafile-client-1 | ==> /home/seafile/.ccnet/logs/seafile.log <==

What is this: https://hub.docker.com/r/flrnnc/seafile-client ??

yes. docker seafile-client

Well this is no official client, provided by seafile ltd. I would suggest you ask here: Open source software / Docker Seafile Client · GitLab