Unhandled exception 452

Good afternoon Andreas,

Many thanks for the quick reply.
I was running LQL and did see those columns missing, so thought to double check with CheckMK if there is nothing else what can be done from this end.

I have been using CheckMK and Nagios for 10years+ , but some of my colleagues are searching for monitoring alternatives and their preference was Icinga2.
I thought it would be nice to have all the alerts in one Multisite window.