Migrating and Upgrading to Joomla! 4.x • 0 Class "JApplication" not found

Joomla 4.4.2
PHP 8.2.x

Hi! I just migrated from Joomla 3.10.12 to Joomla 4.4.2.
All works fine, except for the picture gallery.

When I click on it in the menu, I get the error: 0 Class "JApplication" not found. I used Joomgallery in Joomla 3.

Could you help me solve this problem? The site is online..
Thank you so much in advance!

Statistics: Posted by PRIO — Thu Jan 25, 2024 9:55 am

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