PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791277513',
];

$_COOKIE = [
    'PHPSESSID' => 'ghhpa674f71akprsbtglrcbop1',
    '_csrf' => 'ced3b30f1d5e6b733a77b349c20d51a2c4e990bf20cbbde6115b16972110f5b4a:2:{i:0;s:5:"_csrf";i:1;s:32:"2n6YxJPLk2qkqPRAq-ZFPnnO3JyUUYkX";}',
    'topics-session' => '1791535374.82.16551.400759|d197bbbd1d400bd72372bc93068ad169',
];

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