499 errors in one browser, how to find what is causing it?

Question

JavaScript

Hello.
On my machine, the site works correctly, but js fell off for some managers in the chrome browser in the product card.
The problem persists in incognito, but not in Mozill.
In the console I see that external resources give an error 499.

What could be the problem?
By what parameter does the error occur on these PCs?

Answer 1

ad blocker calls

Answer 2

Top right extension that cuts out ads and scoops your js code :)