PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791528051',
];

$_COOKIE = [
    '_csrf' => '6ef69154b760be41623fd35390c55b33d1b89c40b2aa26e64a3c79d33c7bb732a:2:{i:0;s:5:"_csrf";i:1;s:32:"FBhzK-i_W3t_fsAJHW1Ua9y3-BLaDsBY";}',
    'topics-session' => '1791570957.065.16478.774856|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'kv8f1m51h2v2u20okh2067mv44',
];

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