PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790883315',
];

$_COOKIE = [
    'PHPSESSID' => '77uftup900q4up8hpp2tjoe2c4',
    'topics-session' => '1790905960.477.16475.316261|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '7c63774577516dba71e2549c624e24fd859a9a48c61314a30d804e8aa4a0e209a:2:{i:0;s:5:"_csrf";i:1;s:32:"kabFi5uXor__Wc9OXhiU4FrdIB1l6vkw";}',
];

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