Вот лог, в чем проблема?
2024/05/02 21:20:03 [warn] 2082912#2082912: *208531053 a client request body is buffered to a temporary file /var/cache/nginx/client_temp/0000434634, client: 94.141.126.119, server: rawr-eso.ru, request: "POST /engine/ajax/controller.php?mod=upload HTTP/2.0", host: "rawr-eso.ru", referrer: "https://rawr-eso.ru/admin_rawr.php?mod=editnews&action=editnews&id=2"
[Thu May 02 21:20:03.600110 2024] [:error] [pid 2104195] [client 94.141.126.119:56662] [client 94.141.126.119] ModSecurity: Access denied with code 44 (phase 2). Match of "eq 0" against "MULTIPART_UNMA