Question Plesk is not logging 500 errors?

[quattro123]

Server operating system version

debian 11

Plesk version and microupdate number

18.0.48

Hi,

I am having pages which generate 500 error (example: https://www.bolidenforum.de/free-pd...090-instruction-manual-anleitung-pdf-download).

But I do not find anything about this error in my error logs - only in access logs.
Am I doning something wrong? How can I find the root cause of this error?


regards!

 

[Peter Debik]

These could be logged to access_log, access_ssl_log or error_log.

 

[quattro123]

Thanks for the answer. I can see entries in access logs, but nothing in error logs. Shouldn't be there some explanations about it in the error log?

 

[quattro123]

It is only logged in access_ssl_log.
How can I find out what's the reason behind this 500 error?

Example:

40.77.167.53 - - [16/Dec/2022:07:00:14 +0100] "GET /free-pdf-manuals-anleitungen-download-kostenlos/2230368-kenwood-mdx-g2-h-service-manual-anleitung-pdf-download HTTP/1.0" 500 30899 "-" "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +Bing Webmaster Tools) Chrome/103.0.5060.134 Safari/537.36"

 

[Peter Debik]

If it is a static resource: Have you also checked proxy_error_log?
And there could be another reason, maybe a defective hard link between the logs. When you look into the "Logs" link in your Plesk graphical user interface, do you see more entries on that error there? It should be a combined log that shows all entries at once.

 

[quattro123]

It shows no errors at all. Even in the graphical user interface it shows only the "info" about the error:

 

[Kaspar]

This topic might present some useful insights:

Resolved - Mod_Security Error Response body too large

Hello, I use Plesk on Ubuntu and installed Mod_Security with Comodo ModSecurity subscription. I also set "Predefined Set Of Values" to THOROUGH. For large pages it returns an Error 500 page. The mod_security log file says: Message: Output filter: Response body too large (over limit of...

talk.plesk.com