I too keep getting this message popping up. No real response from any Avast staff as to what this is or what to do about it for Mac users. Why not? Why does JS-Miner-C find no postings on this forum, but plenty of them (on this forum) when I do a Google search. Ignorance is not bliss. Help us Avast!! Do not tell us to post in some other place in forum, tell us what to do about this!!
Screenshot of two error messages should be attached here!!