PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791375668',
];

$_COOKIE = [
    'topics-session' => '1791492695.908.16490.744282|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'e4972fdedd4741ae2f628858af222f97bb31da438acba6e0d985cd400de8a90da:2:{i:0;s:5:"_csrf";i:1;s:32:"hqwiCOvreGDdpfOYxBwhFYkMTHulpmU0";}',
    'PHPSESSID' => 'r740qpchs6bus1u164m7k26mt6',
];

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