PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791492278',
];

$_COOKIE = [
    'PHPSESSID' => 'sdkko7g168o9usm7o0mo4vd2m5',
    '_csrf' => 'c669bb302839972b98dd974021b331c8a8dce43fd7b12b85ef19945f75b91d2da:2:{i:0;s:5:"_csrf";i:1;s:32:"y7QCS_EnPG1bKkzaAiYrlxFSD2D-Dc0A";}',
    'topics-session' => '1791725741.073.16477.512515|d197bbbd1d400bd72372bc93068ad169',
];

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