PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791125865',
];

$_COOKIE = [
    'topics-session' => '1791179867.714.16975.234304|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '7281kspc07110n01p8oj961ps5',
    '_csrf' => '4c496885d59ea60193dca39318f3f68bc662c45e0b7dd73cc895d29e51b087b2a:2:{i:0;s:5:"_csrf";i:1;s:32:"PDQ2wUE8yJ15Ot_Q7haNhLORUwhs5V_H";}',
];

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