Problem after migration and PHP update

Hello,

Can you provide these elements in order to allow us to better understand the situation :
- Active the Joomla Debug and in the level maximum :

Hi,

Thanks. That's a strange error.
I'm not able to reproduce it on PHP 8.1 and Joomla 4.
Also, I checked the code and as far as I can see, the only way to get that error is if the file administrator/components/com_hikaauction/classes/auction.php would be missing or empty or something like that.
Could you check on that ?
Could it be that the file was not transferred properly at some point while you migrated your website ?

Hi,

The file looks good and it's the same I have on my end.
So I'm not sure how it can work for me and not for you.
Could you provide a backend access (to be able to activate the debug mode), FTP access (to do some debugging in the code) and the URL of the page with the issue on the frontend, along with instructions (if necessary) to reproduce the error via our contact form ?
www.hikashop.com/support/contact-us.html
Please make sure you include a link to this thread for reference.

Hi,

The issue comes from an override.
You have the file /templates/yootheme/html/com_hikaauction/administrator/classes/auction.override.php
This file tries to load the file administrator/templates/isis/html/com_hikaauction/administrator/classes/auction.override.php which doesn't exists on Joomla 4 since the backend template changed.
So it's a customization problem, not a problem in HikaAuction.
Delete the file /templates/yootheme/html/com_hikaauction/administrator/classes/auction.override.php and it will work normally. Now, this means that you had a class override so it also means that you'll lose the customization. You would have to get the file administrator/templates/isis/html/com_hikaauction/administrator/classes/auction.override.php from your old website on Joomla 3, to see what it had... Maybe you need to redo the override.