SEO Suite Problems

Hello, I have the following message in the logs:

(ERROR @ /core/components/seosuite/src/Plugins/Redirects .php : 15) PHP warning: Undefined array key “q”

Does anyone have an idea where or why this error message comes from?
Modx 3.0.4 / Apache / PHP 8.2

It’s just a warning.
PHP 8 issues a warning when the code tries to access a key in an array that doesn’t exist.
In this case the code tries to read the request parameter q$_REQUEST['q'].

The parameter q is usually set in the .htaccess file:

RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]

When friendly URLs are used, this parameter allows the code to find the requested page.