PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791250345',
];

$_COOKIE = [
    'PHPSESSID' => '3rqpk53ljdtr88n5n7jg580bc7',
    'topics-session' => '1791484972.588.16615.107494|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '4e5a1c39f5e1aedc17091fd883a6f9f1d724db61cba1c692fe307b48b8dc211ba:2:{i:0;s:5:"_csrf";i:1;s:32:"ML3CHTR-UDNhJ6JtHVUJmwo_jLVCM-7k";}',
];

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