PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790887709',
];

$_COOKIE = [
    'topics-session' => '1791141366.096.16901.612977|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'blsdtnpg5jume76jgmv2vp0g41',
    '_csrf' => 'ad4a62c5567a0be37943fc6272ba7820e180479dfa84293e3fa7e446cb9d4049a:2:{i:0;s:5:"_csrf";i:1;s:32:"53iEtEnHgKGA4cLBpJ-IuD0ESmrhQUL4";}',
];

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