[Solved] Panel down with error 500

Discussion in 'ISPConfig 3 Priority Support' started by remkoh, May 16, 2026 at 3:05 PM.

  1. remkoh

    remkoh Well-Known Member HowtoForge Supporter

    I think some package(s) got updated and since my panel is down with an error 500.
    But I can't find any logs telling me what's causing it.
    The only thing I've found is
    Code:
    2026/05/15 07:39:35 [error] 1027#1027: *619 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Uncaught InvalidArgumentException: Please make sure the folder '/usr/local/ispconfig/interface/lib/classes/IDS/../../../temp' is writable in /usr/local/ispconfig/interface/lib/classes/IDS/Monitor.php:159
    Stack trace:
    #0 /usr/local/ispconfig/interface/lib/classes/ids.inc.php(117): IDS\Monitor->__construct()
    #1 /usr/local/ispconfig/interface/lib/app.inc.php(420): ids->start()
    #2 /usr/local/ispconfig/interface/web/index.php(32): require_once('...')
    #3 {main}
      thrown in /usr/local/ispconfig/interface/lib/classes/IDS/Monitor.php on line 159" while reading response header from upstream, client: <redacted ip>, server: _, request: "GET / HTTP/1.0", upstream: "fastcgi://unix:/var/lib/php8.3-fpm/ispconfig.sock:", host: "127.0.0.1:2222"
    
    Though the folder being writable isn't the issue. PHP ispconfig.sock is running as the correct user and changing the folder to 777 doesn't help either.

    Anyone got any clue on what could be the cause or where to find a proper error log telling me what's going wrong?
    This node is running the panel only.
    Other nodes running the same webserver (nginx) and php version got the same updates and don't seem to have any issues.
     
  2. remkoh

    remkoh Well-Known Member HowtoForge Supporter

    Last edited: May 16, 2026 at 3:33 PM

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