I installed McAfee ESM ver. 9.5.2.
I connected a lot of different event sources in ESM.
Some event sources from which the event comes, I still Installed and collectors Active Response.
And I try to search from the ESM, but I can not get a result from the query.
I tried to execute queries:
User detail search
Process information from source IP address and time
Process information from destination IP address and time
CurrentFlow for IP address
My Settings Integration
You should try 9.6 version.
In my test lab everything works as it should:
In 9.5.2 I had the same error as you.