PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791219022',
];

$_COOKIE = [
    'PHPSESSID' => '8vidmm2ugtrbpopk780v9c7846',
    '_csrf' => 'f01777b919fe25fd4301c9144c56c305ad3fe3f3ade4cc88a0d84609f39b0caaa:2:{i:0;s:5:"_csrf";i:1;s:32:"3HWZXsbBiRisWYggjIPvgcYur-Ha0P66";}',
    'topics-session' => '1791257197.048.16814.69476|d197bbbd1d400bd72372bc93068ad169',
];

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