I have the same issue. I thought it better to keep it all under one thread rather than start a new one.
When I run the "sudo ps -ef|grep nagios" command
"adrian 24846 15493 1 11:00 pts/1 00:00:00 grep nagios"
I followed a guide(ubuntu + Nagios) to get me to this point with a little help from a linux admin who watched over me. I ran the verification command when I was going through the guide and it came up with 0 Warnings and 0 Errors.
This was only today and I thought was nagios was working perfectly till I saw this thread this evening. I had been searching a different topic.
I never set up anything for nagios to actually monitor we the Other admin and I presumed that this Whoops! Error: was due to that.
Could you tell me please what I can do to correct the problem? The other linux admin had only been here on a seperate job and did some things in the middle of the guide that I dont think I can repeat.
Any help would be appreciated