Fatal error: Uncaught Error: Typed property Group::$_data must not be accessed before initialization in /usr/www/users/zertko/zkv3.1.0/classes/Group.php:82
Stack trace:
#0 /usr/www/users/zertko/zkv3.1.0/gDetails.php(9): Group->data()
#1 {main}
thrown in /usr/www/users/zertko/zkv3.1.0/classes/Group.php on line 82