What's going on with all the sites on my computer?

Question

Browsers

Hello, yesterday I noticed that everyone (absolutely, except for google.com) has a lot of errors in the console, and there are a lot of them that I have never seen. It certainly wasn't like this before. The sites work normally, nothing is buggy, but this is alarming. I checked all 3 computers in the apartment - they all have the same thing, on all browsers (opera, chrome, yandex, firelis). I thought they hacked the router - connected via a 4g access point from the phone - everything is the same. What could it be?
a couple of error screenshots:

spoiler

1 from opera, second from firefox. in other browsers as well as in opera.

Answer 1

Blocking Yandex and Google analytics.
We must rejoice