Getting this error message on course related pages (SP LMS on Joomla 4):

Deprecated: Required parameter $key follows optional parameter $arr in /home/pstraining8/public_html/components/com_splms/helpers/helper.php on line 295

This is what is on line 293 to 298: }

public static function keySort(&$arr = array(), $key) {
    usort($arr, self::compare($key));
    return $arr;
}
===================
What to do?
Tks!


MORE ERROR MESSAGES SINCE:

Warning: Undefined array key "followings" in /home/pstraining8/public_html/libraries/src/Component/Router/Rules/StandardRules.php on line 209

Warning: Attempt to read property "key" on null in /home/pstraining8/public_html/libraries/src/Component/Router/Rules/StandardRules.php on line 211