okay, in the past when ive ran into this issue launching websites i would run this command in terminal:
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
This flushes your local DNS cache.
Run this through AI if you want, I know it looks a bit scary.
Here's what claude is saying about the situation - you鈥檒l see it mention this command as well as some other options.