XF 1.5 500 Errors after latest update

[Okuma Steve]

We updated to the latest version of Xenforo and now we're getting a lot of 500 errors during high traffic periods. We're running on php 7, and we switched to https about the same time as we did the latest update.

Any ideas? Thanks!

[warn] [client xx.xx.xx.xx] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[error] [client xx.xx.xx.xx] Premature end of script headers: index.php
[warn] [client xx.xx.xx.xx] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server, referer: (forum url)/forums/outdoor-gear-knives.10/
[error] [client xx.xx.xx.xx] Premature end of script headers: index.php, referer: (forum url)/forums/outdoor-gear-knives.10/
[warn] [client xx.xx.xx.xx] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[error] [client xx.xx.xx.xx] Premature end of script headers: index.php
[warn] [client xx.xx.xx.xx] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[error] [client xx.xx.xx.xx] Premature end of script headers: index.php
[warn] [client xx.xx.xx.xx] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server, referer: (forum url)/search/10228208/?q=v7&o=date&c[title_only]=1&c[node]=73
[error] [client xx.xx.xx.xx] Premature end of script headers: css.php, referer: (forum url)/search/10228208/?q=v7&o=date&c[title_only]=1&c[node]=73
[warn] [client xx.xx.xx.xx] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[error] [client xx.xx.xx.xx] Premature end of script headers: index.php​

 

[TPerry]

https://www.liquidweb.com/kb/apache-error-premature-end-of-script-headers/

And check your PHP and Apache error log to see if it has more detail. Good possibility that you are exceeding resources and it is killing the PHP processor.