PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791622271',
];

$_COOKIE = [
    '_csrf' => '4fced7d2fe0fe543e08f37ae5ea79c9002f0ef77914166081594b0cd07843f18a:2:{i:0;s:5:"_csrf";i:1;s:32:"QFeLNFjMw0k95N9LtwZNKiz7UQHUw1Jj";}',
    'PHPSESSID' => 'lndcucg4c2j7cpmso6mtb21vo6',
    'topics-session' => '1791832037.795.16478.278063|d197bbbd1d400bd72372bc93068ad169',
];

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