PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791004602',
];

$_COOKIE = [
    'PHPSESSID' => 'fca8fc1trpg3nfh0225ipftlh3',
    '_csrf' => '986a2d3cd74baf299f027a2ec5869b9c7821a18b63b4b884d4ce7da5b3e2d888a:2:{i:0;s:5:"_csrf";i:1;s:32:"X7pPi2e4AK4z4NswXiZxYJvqigLnSx2x";}',
    'topics-session' => '1791141259.435.16480.669312|d197bbbd1d400bd72372bc93068ad169',
];

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