PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791182929',
];

$_COOKIE = [
    'topics-session' => '1791461241.79.16477.424935|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '877490dde2974b5b632099a35cdd0c8b3f9e1d662b0436e8af42009e53db480aa:2:{i:0;s:5:"_csrf";i:1;s:32:"RdbWsG-ZVO6tzaXwUQtyzN5hwN2suFsM";}',
    'PHPSESSID' => 'h150sist19vus43526obd1d587',
];

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