PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790880511',
];

$_COOKIE = [
    'PHPSESSID' => 'q44g2avlj13djp5jt46328ud10',
    'topics-session' => '1790916965.872.16481.118473|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '47e303bbd40e8043d7961474b1d929b0966db679b685d6b9f7acff2a710be818a:2:{i:0;s:5:"_csrf";i:1;s:32:"QfB_EH-4rgikiRgRaoEhlyAsg8tvjjYh";}',
];

$_SESSION = [
    '__flash' => [],
];