A lot of warnings Deprecated: Required parameter

Our website is updated to:
Wordpress 5.6
PHP 8.0
X 8.0.10
cornerstone: 5.0.10

Then we found a lot of warnings (debug mode on) like:
Deprecated : Required parameter $id follows optional parameter $key_prefix in /var/www/html/www.mymvc.net/wp-content/plugins/cornerstone/includes/utility/element-api.php on line 87

Site:
http://www.mymvc.net/

Does it indicate any compatibility issue?

Hello @cuixu,

Thanks for writing in! As of this moment, the recommended PHP version of WordPress is 7.4 or greater. The same goes for the latest version of the X Theme and Cornerstone. You can check out the compatibility documentation here:

In the meantime, you can ignore the warning by disabling the debug mode. On the other hand, our developers are currently testing with PHP 8 as well.

Best Regards.

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