PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791987218',
];

$_COOKIE = [
    'topics-session' => '1792044590.051.16697.400315|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '2djme04cv6n3vbkthucrk4lar1',
    '_csrf' => '2a3a2668e998f20fdc23bb96c54c81ea4c6a6fb0d52f81eccb4d6708282c9b3ea:2:{i:0;s:5:"_csrf";i:1;s:32:"uEzUCsi5L_432w3NNEs-F7Wd9Xzy2nlS";}',
];

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