Backup on a shared server doesn't seem to work.

I've tried to open the dialog box on a shared database from an administrator account, which shows me the same message.

The "Binary paths" configuration seems fine since it's the same in the default account and the user accounts.

I can't see any error message in docker logs.

If I recreate the exact same server from an user account and hit Backup on this one, it works well, so I guess the problem comes from the sharing, although the documentation states these limitations but doesn't mention dumping or restoring :

The Users accessing the shared servers cannot do the following operations on the shared servers:

• Create a server

• Delete the server

• Rename the server

• Rename the group server

• Change of host, port, and maintenance database

I couldn't find anything on the mailing list about this and I found an old bug on redmine (pgadmin/#3722), which doesn't seem related to shared servers.

Is there any way to increase log verbosity or do you have any idea what's going on ?

Thanks for your support,