Youtube won't open

1

Hello.

When opening YouTube, a window appears:

"Login

To access the proxy server https://srv10.unyoutube.net, you must specify a username and password.

Username

Password

Login

Cancel"

There is no such thing on other browsers. What is this?

Version 1.73.104 Chromium: 131.0.6778.204 (Official build), (64 bit)