JP Medical error on PHP8

Hello.
One of my servers is updated to PHP8. It seems that most of the templates get a fatal error when moving to PHP8. For example JP Medical gives errors like:

Fatal error: Declaration of Warp\Dom\Element::before($data) must be compatible with DOMElement::before(...$nodes):
Warning: Trying to access array offset on value of type int in /templates/jp-medical/warp/src/Warp/Config/Repository.php on line 243

How can I solve this fatal error ?

Hello, all warp7 themes are not working with php8. Swich back to php7 or use the new medical theme with astroid framework.
www.joomlaplates.com/template-documentat...mla-4-compatibilty-2

thank you for your feedback.
Will all themes have an updated version ? I'm also using IMO.
Is there a way to check which templates are PHP8 compatible ?
Thanks!

See #2
If you have Warp7, it will not work with PHP8
If you are using Astroid-Framework, it will work with PHP 8