PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791003053',
];

$_COOKIE = [
    'topics-session' => '1791020751.411.17008.866723|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '821df8ee563cc336557d6bf9d9c851ae8f1010f984e0284989c801f5ce5ef611a:2:{i:0;s:5:"_csrf";i:1;s:32:"_ELQthP2LjExpAoEbBc0miDtvWV8VOFc";}',
    'PHPSESSID' => '70rq9or6mcqh2pldktjkf9sdr4',
];

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