Seaf-cli stops working on a given library

Hello i’ve seaf-cli installed on a file-server and syncronizing a library to a seafile server.
The library is in production since one year and all was ok. Suddenly without touch anything on seafile, the library seems to stop sync.

I’ve made some preliminary testing desincyng the production library and sync another new testing library. In this case all is ok.

So may be something corrupted (i think) on the production library.
How can i check for errors on the production library or how can try to repair it?

Both seaf-cli and server are on the respective latest versions (6.0.4 and 6.1.1)

TIA

You can check the log on the client side. It should be ~/.ccnet/logs/seafile.log.