PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791658693',
];

$_COOKIE = [
    '_csrf' => '6284026be47feb4649117ab76ac41aabc9eb1338a20e143e98251dad65e6263aa:2:{i:0;s:5:"_csrf";i:1;s:32:"0nSUwPVZjqegBfRowomBkdsWIJnNtLWH";}',
    'topics-session' => '1791886414.094.17043.400467|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '3l4iccp7fad144idlfelm9j5k1',
];

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