URLからデータを取得したい

Question

fetchVenueを呼び出したところ
keyNotFound(CodingKeys(stringValue: "group", intValue: nil), Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "response", intValue: nil)], debugDescription: "No value associated with key CodingKeys(stringValue: "group", intValue: nil) ("group").", underlyingError: nil))
というエラーが出てしまい、データを取得できません。
解決方法を教えていただけないでしょうか？

class Service {
    
    static let shared = Service()
    
    
    func fetchVenue(location: CLLocationCoordinate2D, completion: @escaping (Empty?, Error?) -> ()) {
        
        let urlString = "https://api.foursquare.com/v2/search/recommendations?ll=(location.latitude),(location.longitude)&v=20160607&intent=coffee&limit=15&client_id=(client_id)&client_secret=(client_secret)"
        
        fetchGenericJSONData(urlString: urlString, completion: completion)
    }
    
    func fetchGenericJSONData<T: Codable>(urlString: String, completion: @escaping (T?, Error?) -> ()) {
        
        guard let url = URL(string: urlString) else { return }
        URLSession.shared.dataTask(with: url) { (data, resp, err) in
            if let err = err {
                completion(nil, err)
                return
            }
            do {
                let objects = try JSONDecoder().decode(T.self, from: data!)
                // success
                completion(objects, nil)
            } catch {
                completion(nil, error)
            }
            }.resume()
    }
}

{  
   "meta":{  
      "code":200,
      "requestId":"5cd6fa5e9fb6b75700851759"
   },
   "response":{  
      "group":{  
         "results":[  
            {  
               "displayType":"venue",
               "venue":{  
                  "id":"4c4fde46dcb5d13ad7b10108",
                  "name":"Fruit de saison (フルーフ・デゥ・セゾン)",
                  "contact":{  

                  },
                  "location":{  
                     "address":"外神田4-11-2",
                     "lat":35.702276108565556,
                     "lng":139.77286384637375,
                     "labeledLatLngs":[  
                        {  
                           "label":"display",
                           "lat":35.702276108565556,
                           "lng":139.77286384637375
                        }
                     ],
                     "distance":223,
                     "postalCode":"101-0021",
                     "cc":"JP",
                     "city":"東京",
                     "state":"東京都",
                     "country":"日本",
                     "formattedAddress":[  
                        "外神田4-11-2",
                        "千代田区, 東京都",
                        "101-0021",
                        "日本"
                     ]
                  },
                  "categories":[  
                     {  
                        "id":"4bf58dd8d48988d16d941735",
                        "name":"Café",
                        "pluralName":"Cafés",
                        "shortName":"Café",
                        "icon":{  
                           "prefix":"https://ss3.4sqi.net/img/categories_v2/food/cafe_",
                           "suffix":".png"
                        },
                        "primary":true
                     }
                  ],
                  "verified":false,
                  "stats":{  
                     "tipCount":0,
                     "usersCount":0,
                     "checkinsCount":0,
                     "visitsCount":0
                  },
                  "dislike":false,
                  "ok":false,
                  "beenHere":{  
                     "count":0,
                     "lastCheckinExpiredAt":0,
                     "marked":false,
                     "unconfirmedCount":0
                  }
               },
               "id":"5cd6fa5fa795bd0039c46dfc",
               "photo":{  
                  "id":"51bfd28d498e80f211f96907",
                  "createdAt":1371525773,
                  "prefix":"https://fastly.4sqi.net/img/general/",
                  "suffix":"/52296049_SkW5N14j2phk0gmnmQ3XGhBFCjy5KJkak2fhB7tKju4.jpg",
                  "width":720,
                  "height":960,
                  "visibility":"public"
               },
               "snippets":{  
                  "count":1,
                  "items":[  
                     {  
                        "detail":{  
                           "type":"tip",
                           "object":{  
                              "id":"56dc0836498ee85362455de5",
                              "createdAt":1457260598,
                              "text":"great selection of heavenly yummy desserts",
                              "type":"user",
                              "canonicalUrl":"https://foursquare.com/item/56dc0836498ee85362455de5",
                              "logView":true,
                              "agreeCount":0,
                              "disagreeCount":0,
                              "todo":{  
                                 "count":0
                              },
                              "user":{  
                                 "id":"11175627",
                                 "firstName":"Roldan",
                                 "lastName":"Toribio",
                                 "gender":"male",
                                 "photo":{  
                                    "prefix":"https://fastly.4sqi.net/img/user/",
                                    "suffix":"/ZDDPKA4LIZFCVYQ4.jpg"
                                 }
                              }
                           }
                        }
                     }
                  ]
               }
            }
         ],
         "totalResults":112
      },
      "context":{  
         "searchLocationNearYou":true,
         "searchLocationMapBounds":false,
         "searchLocationType":"NearYou",
         "currentLocation":{  
            "what":"",
            "where":"",
            "feature":{  
               "cc":"JP",
               "name":"Akihabara",
               "displayName":"Akihabara, Tokyo, Tōkyō",
               "woeType":22,
               "slug":"akihabara-japan",
               "id":"maponics:10004338",
               "longId":"10004338",
               "geometry":{  
                  "center":{  
                     "lat":35.701304,
                     "lng":139.775174
                  },
                  "bounds":{  
                     "ne":{  
                        "lat":35.706567,
                        "lng":139.780981
                     },
                     "sw":{  
                        "lat":35.6968,
                        "lng":139.769614
                     }
                  }
               },
               "encumbered":true
            },
            "parents":[  

            ]
         },
         "boundsSummaryRadius":600,
         "relatedNeighborhoods":[  

         ],
         "geoParams":{  
            "ll":"35.7020691,139.7753269",
            "radius":"600"
         },
         "geoBounds":{  
            "circle":{  
               "center":{  
                  "lat":35.7020691,
                  "lng":139.7753269
               },
               "radius":600
            }
         }
      }
   }
}

struct Empty: Codable {
    let response: Response
}
struct Response: Codable {
    let group: Group
}
struct Group: Codable {
    let results: [Result]
    let totalResults: Int
}
struct Result: Codable {
    let venue: Venue
}
struct Venue: Codable {
    let id, name: String
    let contact: Contact
    let location: Location
    let categories: [Category]
    let verified: Bool
    let dislike, ok: Bool
    let beenHere: BeenHere
}
struct BeenHere: Codable {
    let count, lastCheckinExpiredAt: Int
    let marked: Bool
    let unconfirmedCount: Int
}
struct Category: Codable {
    let id, name, pluralName, shortName: String
    let primary: Bool
}
struct Contact: Codable {
}
struct Location: Codable {
    let address: String
    let lat, lng: Double
    let distance: Int
    let postalCode, cc, city, state: String
    let country: String
    let formattedAddress: [String]
}