Why does the site redirect images to a slash at the end of the URL?

Question

PHP

When transferring the site to a test server, we noticed such a problem, the site stopped loading pictures, while there are a lot of 404 errors in the console, and in the paths to the pictures there is / at the end of the address. If you open an image in the browser, it will also be surrounded by a slash at the end of the address.
The server is running nginx and php-fpm as well as the Bitrix web environment. Where can there be a similar setting responsible for redirects? Yes, and some of the pictures are loaded normally.