Auto scan result - Manual fix

I ran a total system scan and received the following result: "iMac Device is at risk.....View Issues." When I view the issue, it says: "1 issue needs your attention. Threats require removal. This issue needs a manual fix. Threats Require Removal. During our scan we detected threats that Bitdefender couldn't fix automatically. Until they're removed, these threats pose a risk to this device. How to fix: Open Bitdefender on this device and manually delete these threats."

I've looked everywhere for the threat, so that I can manually delete it, but can't find it anywhere to delete - - - so I have no information about what the threat is or where it is. So the big red warning saying my iMac is at risk stays on my Dashboard. Can anyone tell me how to get rid of or fix the threat?