PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790921238',
];

$_COOKIE = [
    'topics-session' => '1790930266.905.16511.307898|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'v160jhn30f4la8b7l2918i8d60',
    '_csrf' => '5850c796ebf87dcd22e01e125c6613a4872d51d0ef76cbe2041acb13ec72dc2aa:2:{i:0;s:5:"_csrf";i:1;s:32:"XUuID_c8D6TeUeFldWPZvHqRqSCmIjAc";}',
];

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