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500 - Internal Server Error after upgrade to Joomla 4

Asked by Juergen Hochhaeuser 2 years ago Last activity 2 years ago

Joomla: 4.4.2
PHP 8.2.15
DB: MariaDB 10.6.15
Helix Ultimate: 2.0.18
Template: Wimble Version 2.0.0 (should be J4 ready according to the documentation, but generates a lot of message in the debugger)
Memory Limit: 256M
Debug System: On
Error Reporting: Maximum

I upgraded a custmer site from J3 to J4. Backend works fine so far but frontend generates issues. Home page is displayed properly, but any other menu item results in below error message, same when using the SPPB frontend editor. No debug or error reported.

**Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.**

2 replies

Rashida Rahman Staff

2 years ago

Hi there!

Sorry for your experience.

The wimble template is compatible with PHP 8.0 maximum. Kindly downgrade to PHP version 8.0, clear caches deeply and then check again to see if it helps!

Best Regards

Juergen Hochhaeuser Asked this

2 years ago

Hi Rashida,

downgrading to PHP 8 did not help.

But I did some further testing and wanted to provide you with an update.

I started from scratch installing the J3 backup. Frontend working fine.
I deactivated all plugins possibly causing troubles with the upgrade.
I successfully upgraded to J 4.4.2
I installed Wimble version 2.0.0 and still receive error 500 as well using PHP 8 when using any menu item
I switched to Cassiopaia as standard template and got it basically working
I installed Decora template and switched to PHP 8.2
Now everything seems to work fine, except, that I receive bunch of warning regarding Decora template and SPPB; I copied a few lines in the hidden content section.

I will continue from here and try to get the websitre working using Decora.

Thank you for your support.