RHEL8.6 : nfs does not start since nfsdcld daemon crashes

Issue

• nfs-server service does not start, sitting permanently on "activating" :

2073 * nfs-server.service - NFS server and services
2074    Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
2075   Drop-In: /run/systemd/generator/nfs-server.service.d
2076            `-order-with-mounts.conf
2077    Active: activating (start) since Tue 2022-09-27 11:25:37 CEST; 3h 26min ago
2078  Main PID: 3509 (rpc.nfsd)
2079     Tasks: 1 (limit: 15288)
2080    Memory: 860.0K
2081    CGroup: /system.slice/nfs-server.service
2082            `-3509 /usr/sbin/rpc.nfsd