PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791510397',
];

$_COOKIE = [
    '_csrf' => '601486b2efa58915da6a8fe23a4a361c6d9db24c59be44a9601b48ef298b89d2a:2:{i:0;s:5:"_csrf";i:1;s:32:"ef7RoNPxpg9bTtjxk7q5ui0WY1XwdzMx";}',
    'PHPSESSID' => '876tktdkcpr1glck3flp8o3sb3',
    'topics-session' => '1791675015.899.16615.567595|d197bbbd1d400bd72372bc93068ad169',
];

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