PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791192642',
];

$_COOKIE = [
    '_csrf' => 'd6ae28d3b12167e5a45085f22efb80d24e83f4dd196f1145f300a2f6b41f9c71a:2:{i:0;s:5:"_csrf";i:1;s:32:"uSnRICIN1iaMVbN00tt4gkOptzHP0oRX";}',
    'topics-session' => '1791276741.43.16958.214813|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'c84ihe0vqot9airjg7nat3b5u5',
];

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