PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791275904',
];

$_COOKIE = [
    '_csrf' => '2eac11ad696a7f08576fa426a63ec9bcbcabee3e2031c15301e7706b461b18b6a:2:{i:0;s:5:"_csrf";i:1;s:32:"tSqFvt-LSs1IL2ERXUe26SLOPkRwQXPL";}',
    'PHPSESSID' => '5fsfhs0vfutvpfs3uvlf0dmm13',
    'topics-session' => '1791379025.701.16477.286237|d197bbbd1d400bd72372bc93068ad169',
];

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