Internal server error when syncing one librairy with the sync client and the drive client


I recently installed a seafile server with docker on my personal server.
I’ve puted in a librairy my work folder, 100 go, with lot of file, through the sync client.
Everything went fine for the upload, and I can access to it with my browser.
But when I try to sync it on my second PC, I got an “internal server error” with both the sync and drive client.
On the sync client, it’s stuck on “retreiving list of files” or “checking server infos”. I have another librairy wich sync correctly.
Can anyone help me to solve this issue?
Best regards