PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791005062',
];

$_COOKIE = [
    'PHPSESSID' => '10qgk34b19h6j1kqk7mmf0sto5',
    '_csrf' => 'e0c83a4f94652d9c320476f14cac9117b0c6cfccf1603e322cfcdcc3cbdacd69a:2:{i:0;s:5:"_csrf";i:1;s:32:"0C-mt3xuTGxZrrz5fFStYd9C1LDFhcso";}',
    'topics-session' => '1791145146.924.16901.453219|d197bbbd1d400bd72372bc93068ad169',
];

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