@Kraken89 I will look into the transition from the previous system to the new one maybe that's the key

@olivierlambert could this error be more verbose? I think this error should say: Cannot write file .keeper_uygbivt5lv on remote <whatever the remote name/address> NFS is mounted but XOA cannot write to mounted dir. This happens in NFSv4 as default when sec=sys on NFS server (that is the default).