How to check a wiki that can't be rich anymore?

On a XWiki 9.10.1 one of the wiki doesn’t appear anymore on the wiki list and can’t be reach directly with the URL or REST.

Does we have a solution for restoring basics rights for a wiki ?
May be you have a Groovy Script that inspect or restore basics rights for a wiki ?

When we try try to reach this wiki we’ve got error on the log. The database is OK, the filesystem of the wiki too.