I have the same problem - the Grafana server is failing after startup.
message:
[ 23.424487 ] Unhandlet prefetch abort: unknown 1 (0x001) at 0x027f6b5a
…
Stefan
I moved your topic into an own one as it is completely different than one you have posted on.
pls can you share following after a fresh reboot
journalctl -u grafana-server
systemctl status grafana-server