even when using 'mfs' for union remotes, somehow, when one gets too full, it can make the sync fail due to "quota limit reached", in the case of microsoft onedrive. the error doesn't say which remote is causing the error though. it'll just say something like
2026/08/17 23:46:55 ERROR : Cancelling sync due to fatal error: HTTP error 507 (507 Insufficient Storage) returned body: "{"error":{"code":"quotaLimitReached","message":"Quota limit reached"}}"
would it be possible to have the error say which one is causing the issue?