PHP Core Warning – yii\base\ErrorException

$_GET = [
    'sort' => 'amount',
    'page' => '11',
];

$_COOKIE = [
    'PHPSESSID' => 'a74gh1ghf9s37aqm16rebecgp0',
    '_csrf' => '620b53c365f13cf56e1164fa00cd56515dcd28cf57f171b8092dd3d5f4d638c1a:2:{i:0;s:5:"_csrf";i:1;s:32:"hy9O5qCsj78siV2CKb5LZO-8ZSdcJ7zP";}',
    'viewed' => '8c1e79479ceb0b599f4796fc3841c6d26862a42fb8158f46c90f958479efe3a5a:2:{i:0;s:6:"viewed";i:1;a:3:{i:0;i:72216;i:1;i:69452;i:2;i:70182;}}',
];

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