Class "Twig\Environment" not found

[Peeripapo]

Hi, I have website with Joomla 3.10.11 and Gantry 5.5.17. We're on PHP 8.2

Suddenly the site is offline and we get this warning on the frontend.

 Error
Class "Twig\Environment" not found

Stack frames (10)
9
Error
…/src/classes/Gantry/Component/Theme/AbstractTheme.php130
8
Gantry\Component\Theme\AbstractTheme renderer
…/src/classes/Gantry/Component/Theme/AbstractTheme.php176
7
Gantry\Component\Theme\AbstractTheme render
/home/jfroriz/public_html/templates/it_insightfx/index.php28
6
require
/home/jfroriz/public_html/libraries/src/Document/HtmlDocument.php678
5
Joomla\CMS\Document\HtmlDocument _loadTemplate
/home/jfroriz/public_html/libraries/src/Document/HtmlDocument.php740
4
Joomla\CMS\Document\HtmlDocument _fetchTemplate
/home/jfroriz/public_html/libraries/src/Document/HtmlDocument.php555
3
Joomla\CMS\Document\HtmlDocument parse
/home/jfroriz/public_html/libraries/src/Application/CMSApplication.php1098
2
Joomla\CMS\Application\CMSApplication render
/home/jfroriz/public_html/libraries/src/Application/SiteApplication.php778
1
Joomla\CMS\Application\SiteApplication render
/home/jfroriz/public_html/libraries/src/Application/CMSApplication.php231
0
Joomla\CMS\Application\CMSApplication execute
/home/jfroriz/public_html/index.php52

`

Any suggestions ?

[pablop76]

Joomla 3.10 is not compatible with PHP 8.2