Tryo below three method
1. Disable/Enable the Network Connection
2: Disable Fast Boot (Dual Boot System)
3: Disable Connect Automatically for the Network
If didn't understand than try these https://appuals.com/activation-of-network-connection-failed-in-linux/
Pulling my hair out with NFS permissions problems.
If you have worked with NFS you know the one:
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting.......
What get me is that I have many NFs shares set up in a script I run and the others work!