Robot listed with hdb and spooler as red:
Release : 20.4
Component : UIM - ROBOT
1. right click controller in IM
2. select to Update Version...
3. select to Replace existing probe > Replace
In most cases this will resolve the issue.
You may also need to:
1. Right click the problem probe > security > set access > OK
2. Right click the problem probe > security > validate > Yes all