PHP Startup Error: Unable to initialize module

Hi there,
i have moved a kirby Site to another server and i am getting a strange php error message. Subpages (like panel) are not working (Internal server error).
I really have no idea what i can do. The .htaccess is being read, but my RewriteBase declarations won’t work…
Can anybody make sense of this message?

PHP Startup: intl: Unable to initialize module
Module compiled with module API=20151012
PHP compiled with module API=20170718
These options need to match

This is probably a hosting issue. If your hosting control panel allows you to switch PHP versions, try that (switch to at least php 7.3). Otherwise, you will need to talk to you your webhost to fix it. Basically that error means that there is a mismatch between the main PHP installation and one of the modules that is installed. The module was compiled against a different version of PHP.

Thanks James. I will try to change the version then…