PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791394694',
];

$_COOKIE = [
    '_csrf' => '221e2784bb3e952ff8fb453ceaec78fbc5832f287a7465048b1e259af1c62d19a:2:{i:0;s:5:"_csrf";i:1;s:32:"2QeEWcT6d_L0yuUhIq1EPfb7fkhrYU8M";}',
    'topics-session' => '1791443218.919.16481.645778|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'c1agbtpd1u4l1r0nbsdoepq876',
];

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