Images are not loaded through the admin part after switching to PHP 7. What should I do?

Question

WordPress

Hello!
Site zaimy-online.com After enabling PHP 7 through FCGI, images are not loaded through the admin part. In php.ini upload_max_filesize is set to 1024M. The upload_tmp_dir folder has write permissions
. SecFilterEngine Off and SecFilterScanPOST Off didn't help. Modules turned off and on. I set php 5.6 back - and everything works fine. Please help me to solve this issue.
Thanks in advance.

Answer 1

Turn on the debug and most likely you will see the problem area yourself.
https://codex.wordpress.org/WP_DEBUG

Answer 2

What is the web server? If Nginx - it still has its own setting - client_max_body_size , regardless of PHP. I don't know about Apache, haven't used it for a long time.