PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1766016726',
];

$_COOKIE = [
    'PHPSESSID' => 'qgc44r2kcjsla2181n1vtclk94',
    'topics-session' => '1766095536.37.16071.897757|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'a0243cbb73071548a225184d4f7c868b129fb570c52062422605fb0fcd66b10aa:2:{i:0;s:5:"_csrf";i:1;s:32:"3mkxscB4jlrJ-WbtxWUNVoBnf1LN7Zqt";}',
];

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