When does EOC have the problem to store module results?

Hi,

at our EOC I receive the following message.

There is a problem storing SolarWinds Server (Core) module results from the <SERVER XYZ> SolarWinds Server. For additional information, see KB4125.

The KB article wasn't helpful.

Unfortunately there is no hint when the problem appears. Is there any other log file where I can found the reason for this message?

BR NetJoerg