is a different error - (no mention of the timestamps )...
depending on how important the historical data is - I would probably move the cache directory to a safe place and restart the services (that way recording should start fresh):
Code:
cd /var/lib/rrdcached/
systemctl stop rrdcached
mv rrdcached rrdcached.bck
systemctl start rrdcached
systemctl restart pve-cluster
I hope this helps!