Antivirus Threat warning Botnet:Blacklist

I’ve started getting this error a few days ago. I haven’t updated Anki or installed a new addon.

“We’ve safely aborted connection on tcp:// because it was
infected with Botnet:BIacklist

Version ⁨2.1.48 (fb07bad3)⁩
Python 3.8.6 Qt 5.14.2 PyQt 5.14.2

I don’t think that’s an IP Anki uses, but it could be an add-on or a remotely-hosted image on one of your cards, and is probably a false positive.