Keeps Blocking

I keep getting a notice that Avast has blocked access to a website, even when I have not tried to access that site (don’t even think it’s a valid site). It happens when I’m on Facebook, on regular websites/forums that I have visited numerous times. How do I figure out why my computer shows trying to access this site?

Oh, it happens both on my laptop and our desktop.

Start a topic in V&W and post a screenshot there.
https://forum.avast.com/index.php?action=post;board=4