Android client unable to upload files

after setting up seafile 11.0.4 i can no longer upload fotos to the server using the seafdroid client (2.3.6 on android 10). i successfully logged in to the account, i can see the libraries and i can also create new libraries on the server from the android client. but the camera upload reliably fails, as does the folder backup.

on the server, seahub.log is flooded with messages like these:

2024-02-11 12:30:18,510 [WARNING] django.request:241 log_response Not Found: /seafile/seafhttp/upload-api/401e3775-0c9a-4755-80a4-692d2c3e6fb0
2024-02-11 12:30:18,926 [WARNING] django.request:241 log_response Not Found: /seafile/seafhttp/upload-api/7ac1eeb2-89bf-4f18-9ba2-3bec6cf7c3d0
2024-02-11 12:30:19,409 [WARNING] django.request:241 log_response Not Found: /seafile/seafhttp/upload-api/edacd9b3-cff7-410c-a56f-4be0aad79c70
2024-02-11 12:30:20,094 [WARNING] django.request:241 log_response Not Found: /seafile/seafhttp/upload-api/e974db1d-af11-4959-95a5-fa94e793e21a
2024-02-11 12:30:20,205 [WARNING] django.request:241 log_response Not Found: /seafile/seafhttp/upload-api/35f33260-949e-406f-8095-d1434d82570c

any hints what might cause this? some issue with the webserver or seafile/seahub configuration?

i found the config error: in my seahub_settings.py the FILE_SERVER_ROOT variable contained the non-root directory seafile is running in. after i removed it before /seafhttp the android client was able to upload files and no more errors were added to seahub.log.