PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791208784',
];

$_COOKIE = [
    '_csrf' => '22a0ed489d546c75918b640a6e5051e764eced1c39b44a0f07706c7e46b8c7d9a:2:{i:0;s:5:"_csrf";i:1;s:32:"SwmvhrHRMr_D_GDxcXu6FXkXD-gDiuUX";}',
    'PHPSESSID' => '908qrler2b4e4tnfsf8vvld547',
    'topics-session' => '1791232504.134.16958.511139|d197bbbd1d400bd72372bc93068ad169',
];

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