PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791367508',
];

$_COOKIE = [
    '_csrf' => '2928da17c2a6bf6a6ece3adb90727a47b4683ffba03ed9df32ae64f45c4226ffa:2:{i:0;s:5:"_csrf";i:1;s:32:"Z_MVk1psis01oteDuKJVAL7z-vWIro3F";}',
    'PHPSESSID' => '6a0e9e58l86me5irkio5ba6b75',
    'topics-session' => '1791485943.428.16551.124200|d197bbbd1d400bd72372bc93068ad169',
];

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