PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790980152',
];

$_COOKIE = [
    'topics-session' => '1790989621.171.16476.531486|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'ngpvp3qobdfjd1ribk9tir5n67',
    '_csrf' => '1224fd51b0ef629b7ca969dc2bdfb26d52cda82c5e042d4a130a5562c3244adca:2:{i:0;s:5:"_csrf";i:1;s:32:"0UuDyd8Y94SrxLclJIB3agkGMUR5z3_A";}',
];

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