deprecated Creation of dynamic property

yeah i'm on 8.2.4 I got dynamic property App\Controllers\Pages::$myDate is deprecated I messed around in my BaseController.php i put

Code:

namespace App\Controllers;
use \AllowDynamicProperties;

Im not getting errors in Dev local host apache but read

Code:

use \AllowDynamicProperties;   // this one in namespace area  


#[\AllowDynamicProperties]   // above class


#[\ReturnTypeWillChange]   /above class method

CMS CI4     I use Arch Linux by the way