template Jp Surfing - php 7.4 to php 8

Hello

I'm trying to update to php 8. Got following error:

Fatal error: Declaration of Warp\Dom\Element::before($data) must be compatible with DOMElement::before(...$nodes): void in /customers/c/e/0/zwemclub-bst.be/httpd.www/templates/jp-surfing/warp/src/Warp/Dom/Element.php on line 108

Can you help plz
Thx
Natascha

Hello, JP Templates are based on Warp 7 and these are not compatible with PHP 8 or Joomla4.
You have to use TP Temlpates which are based on Astroid.
www.joomlaplates.com/joomla-tips-und-tricks/joomla-4-faq.html

thx for replying

i try to understand the documentation page, it's in german, i don't really understand. Can you plze tell me short how to do?
i bought two sites from joomlaplates, i really hope that i don't need to start over again; i bought both of them last year

thx

Hello, here is the docu in english
astroidframe.work/support/documentations