PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791208472',
];

$_COOKIE = [
    '_csrf' => '9c23c14cb2e177762e64337f35ba4224f236719a85b9e238642b0f6260868de8a:2:{i:0;s:5:"_csrf";i:1;s:32:"VGP8YUFnAf1g5zPGgJHeAFeX4SvO4rTe";}',
    'topics-session' => '1791228155.545.16480.700936|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'uhpn31kd1pc6obmbell2p8ssn2',
];

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