I've just reinstalled our forum and everything works but a few things such as editing users via ACP, viewing topics.
Error log:
#5 /home/user/publi in /home/user/public_html/forums/cache/skin_cache/cacheid_7/skin_global.php on line 1594" while reading response header from upstream, client: IP Address, server: mysite.com, request: "GET /forums/index.php?/topic/5946-ello/ HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/152174562222486.sock/socket:", host: "mysite.com", referrer: "mysite.com"
Using IPB 3.4.9.
Thanks to anyone that helps me.
Update: FIXED, was a simple fix, I had my PHP version set to 7 so I changed it to 5.4.