"Error. Check logs." in red text in the Agent Status dashboard, for every agent in the "Collecting Data" column.
Errors in the FMS logs (schedule id may vary):
This issue is caused by having agent blackouts associated to non-existent schedules.
Find out which agents that are using this schedule from the command line by using this command (replace user and password with the appropriate values):
$FMSHOME/bin/fglcmd.sh -usr foglight -pwd foglight -cmd agent:showschedule
You should get an output similar to this:
In the example above, Agents 164 and 31 have a blackout with the invalid schedule. In order to remove these invalid schedules you can run this commands:
$FMSHOME/bin/fglcmd.sh -usr foglight -pwd foglight -cmd agent:setschedule -agentid 164 -scheduleid 98268e6a-b0ee-4e15-b064-d9470fa855e7 -remove;
$FMSHOME/bin/fglcmd.sh -usr foglight -pwd foglight -cmd agent:setschedule -agentid 31 -scheduleid 98268e6a-b0ee-4e15-b064-d9470fa855e7 -remove;
After clearing all agents from this blackout schedule, the error should be cleared from the UI.