Параметр query string возвращает null

{
rating: 3,
facilities: [
"Hot drinks",
"Food",
"Premium wifi"
],
openingTimes: [
{
days: "Monday - Friday",
opening: "7:00am",
closing: "7:00pm",
closed: false
},
{
days: "Saturday",
opening: "8:00am",
closing: "5:00pm",
closed: false
},
{
days: "Sunday",
closed: true
}
],
reviews: [
{
createdOn: "2018-02-20T14:27:30.263Z",
author: "Simon Holmes",
id: "5a8bd5bb99fc1ef946375c29",
rating: 5,
timestamp: "2013-07-15T20:00:00.000Z",
reviewText: "What a great place. I can't say enough good things about it."
}
],
_id: "5a8bd5af99fc1ef946375c28",
name: "Starcups2",
address: "125 High Street, Reading, RG6 1PS"
}

module.exports.reviewsReadOne = function(req, res) {
    console.log("Getting single review");
    if (req.params && req.params.locationid && req.params.reviewid) {
      Loc
        .findById(req.params.locationid)
        .select('name reviews')
        .exec(
          function(err, location) {
            console.log(location);
            var response, review;
            if (!location) {
              sendJSONresponse(res, 404, {
                "message": "locationid not found"
              });
              return;
            } else if (err) {
              sendJSONresponse(res, 400, err);
              return;
            }
            if (location.reviews && location.reviews.length > 0) {
              [B]  console.log('Eto ===>', req.params.reviewid); // ТУТ ид 5a8bd5bb99fc1ef946375c29[/B]
              review = location.reviews.id(req.params.reviewid);
             [B] console.log('Eto2 ===>',review); // А тут NULL[/B]
              if (!review) {
                sendJSONresponse(res, 404, {
                  "message": "reviewid not found"
                });
              } else {
                response = {
                  location: {
                    name: location.name,
                    id: req.params.locationid
                  },
                  review: review
                };
                sendJSONresponse(res, 200, response);
              }
            } else {
              sendJSONresponse(res, 404, {
                "message": "No reviews found"
              });
            }
          }
      );
    } else {
      sendJSONresponse(res, 404, {
        "message": "Not found, locationid and reviewid are both required"
      });
    }
  };