500 Error

Hi Roobik,

It depends on what the cause of this is, if in fact it is the fault of our extension in J4/J5 I can fix it, but if another extension (plugin), Joomla core itself or Server/PHP settings fault or hacker attack - it is beyond included here support.

Few facts:

• Remember that support of Joomla 3.10 has officially ended in Sep 2023 (last year).
• SPPB 5.x may not work in Joomla 3.x for obvious reasons.
• Not all (old) templates can work with PHP 8.1/ PHP 8.2

First Share access to the admin area! And read 3 facts from above post.

Yes, you set/use too new PHP version for current installed old Joomla 3.x.

Please use older one for now (till Oct). For example try PHP 7.4 and retest, then set PHP 8.0. and test again. Sometimes the new is hostile to the old.

Do not use PHP 8.1 or PHP 8.2 for Joomla 3.x! It's OK only for J4.4 and J5.1.x

That's why you have errors "Deprecated: .... and blank page.

From configuration.php file, here you have to set : false and none

OR from Global Configuration (Joomla Admin) change those two

In J3.x was in similar tabs.