Error nfs_expired

The connection to the server expired

The NFSv4 lease timed out — usually after the app was in the background a while or the NAS restarted. Reconnect from the server list.

What this means

NFSv4 status 10011 / 10022 (EXPIRED / STALE_CLIENTID). NFSv4 servers give each client a lease that must be renewed. After a long pause — the app suspended in the background, the device asleep, the NAS restarted — the server forgets the client.

Fix

Go back to the server list and reconnect. The app establishes a fresh client ID. Nothing on the server needs changing.