Random crashes from the webserver

As above - ive only been using it about a week or so. Got my final setup running (optiplex 3050 proxmox with HA vm’d) last night i started adding my devices on (primarily zigbee from aurora) - as i started to add them on (about 15 or so, so far) i found the webserver starting to fail…looking at the console view on proxmox it all appears ok -so ive had to do a few reboots. Im on it this morning and its failed again…is this normal?

Just to add to this the webinterface failed as i said…ive left it (abot 30 odd mins i guess) refreshed and its obvioulsy restarted in the background…so to adjust the question a little - is that normal?