PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790940546',
];

$_COOKIE = [
    'topics-session' => '1790991144.114.16615.549809|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '325cbb584e1c4c4cda432cbb27b6b965b2dc714534f6c46bc3c708133c678518a:2:{i:0;s:5:"_csrf";i:1;s:32:"9C_4fQ_n1bW4BPENNF-bByJxmZfoYasq";}',
    'PHPSESSID' => 'r2uc2co11pmuddjajko46cqdk6',
];

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