Issue Server Error 500 Internal Server Error for one of my websites

[cientiros]

Anyone have any troubleshooting suggestions for this:

Server Error​

500​

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator to inform of the time the error occurred and of anything you might have done that may have caused the error. More information about this error may be available in the server error log.


Here's the log 500 error:

2021-03-21 07:54:12

Error

72.197.96.117

500

GET / HTTP/1.0

3.32 K

Apache SSL/TLS access

 

[Bitpalast]

In the combination that your log exposes, it is very likely that an include in a page refers to a resource that is missing from the server. Instead, a custom "not found" item is being loaded which includes a resource that is missing from the server. This again triggers a "not found" ... For that reason the page body gets bigger and bigger. This eventually leads to the excessive page body size that cannot be processed by the server.

The scenario can be a little different, but in the end it is normally infinite rewrites and includes that are causing this specific issue. It could be the "not found" loop or another type of loop, e.g. in some content management plugin where one messages is nested in another etc. It is not possible to identify the exact cause from the log entries.

 

[cientiros]

In the combination that your log exposes, it is very likely that an include in a page refers to a resource that is missing from the server. Instead, a custom "not found" item is being loaded which includes a resource that is missing from the server. This again triggers a "not found" ... For that reason the page body gets bigger and bigger. This eventually leads to the excessive page body size that cannot be processed by the server.

The scenario can be a little different, but in the end it is normally infinite rewrites and includes that are causing this specific issue. It could be the "not found" loop or another type of loop, e.g. in some content management plugin where one messages is nested in another etc. It is not possible to identify the exact cause from the log entries.

Ok.

@IgorG addressed this and his solution worked for me.
Do you see this Apache and nginx setting in Additional Apache Directives to not be the solution?

<IfModule mod_security2.c>
SecResponseBodyLimit 546870912
</IfModule>

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

 

[Bitpalast]

Rule no. 1: When IgorG posts something, it is most always the best possible choice for you to follow his recommendation. He knows Plesk excellently and he is a brillant Linux wizard, too. It is very unlikely that something that comes from him won't work.

But: Sure you can expand the limit for the amount of data that is allowed. It seems to "solve" your issue. But there is a reason for limits. Normally, crossing such a limit means that something else is wrong with a content. I'd rather tackle the underlying issue than avoiding error messages by expanding a threshold to avoid a symptom.