XF 2.1 500 Error after saving new user promotion rule

[nitchoho]

Hello,

I just saved a new rule for user promotion and get a HTTP ERROR 500 for the hole Xenforo installation. White srceen of death.

I added this:

$config['debug'] = true;

inside src/config.php but the screen is still white without any information.

In my php logfiles I get this message:

Next �A3�
  thrown in .../forum/index.php on line 3
[10-Dec-2020 11:43:19 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function ء3�() in .../forum/index.php:3
Stack trace:
#0 {main}

Do you know how I can troubleshoot that problem?

Thanks.

PS: Before I installed this Addon: https://xenforo.com/community/resources/xen-soluce-disallow-links.7408/

 

[nitchoho]

After restarting the Apache the Forum is working again

 

[Mike]

That looks like some sort of opcache corruption. Restarting the web server would've cleared that.

Unfortunately, nothing that can really be done in XenForo about it. If it happens again, I might recommend trying a different (preferably newer) PHP version to see if that helps resolve it.

 

[nitchoho]

Thanks for your answer. I think it was just coincidence that it happens in the moment I was saving. More likely that the server was unstable at the same time.