PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791452336',
];

$_COOKIE = [
    '_csrf' => '216d2fb1cf9c1f41a69ac58992db6091b3792c32a6451a823dfaa15b379316bea:2:{i:0;s:5:"_csrf";i:1;s:32:"u67ne1epRJHMZQ7_MP1jog2sU4ncaqPj";}',
    'topics-session' => '1791937860.161.16480.335240|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'ka965vd6aupr1srulgpu7jubn1',
];

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