PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791225907',
];

$_COOKIE = [
    'topics-session' => '1791244714.704.16814.52455|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '3i599d668suiipoa727gi6hcm2',
    '_csrf' => '5c632f6065c20c3ab4a0c5f99c4c0936e3952faed338bba8626e1eb8f9377f9fa:2:{i:0;s:5:"_csrf";i:1;s:32:"hAKk_mn6SFM7yA3-Q1sJfGyQhfENUsan";}',
];

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