Brave displays nothing but "Aw, Snap!", all the time, everytime

The following resolved my issue: https://forums.pcmatic.com/topic/209135-pc-matic-super-shield-cant-whitelist-applications/

The actual work-around is here: https://forums.pcmatic.com/topic/209135-pc-matic-super-shield-cant-whitelist-applications/?tab=comments#comment-1819235

It was/is a problem with PC Matic Super Shield, that they are aware of and are apparently working on a fix.

Thanks all for your help and suggestions!