What is this script and how to disable it?

Question

Drupal

There is a site on Drupal. It takes a very long time to load. Some 0.gif file is to blame, which loads
https://x01.aidata.io/0.gif?pid=5667740&rnd=0.7782...
I don't see it in the code
What is it and how to get rid of it? Here are a couple of screenshots
prntscr.com/d7zskn
prntscr.com/d7zszh
I would be very grateful for your help

Answer 1

.htaccess prohibit downloading files from external sites