NFS FREENAS stopped working, what should I do?

Question

NFS

Problem - nfs stopped working on freenas 10.2.0.2. Prior to that, it worked steadily for several months.
This storage is used as storage for Proxmox virtualization. The problem is that Proxmox does not see nfs on the server, and mounting on Linux gives this result.

mount.nfs: access denied by server while mounting 192.168.18.25:/mnt/share/nfs

Didn't update or change settings. Just turned off virtualization and Freenas for 3 hours.
What could be wrong here?