title: Swift - The data couldn’t be read because it isn’t in the correct format
body: <p>I am developing a  project to learn how to parse JSON. I am trying to parse <strong>JSON</strong> to a <strong>struct</strong>. I am trying to do it using the code that comes next but I am getting the following error:</p>
  
  <blockquote>
    <p>Err The data couldn’t be read because it isn’t in the correct format.</p>
  </blockquote>
  
  <p>What am I doing wrong? Also I tried to use Alamofire but I didn't find way to parse it to struct.</p>
  
  <pre><code>func getData(){
      let gitUrl = URL(string: "http://95.46.99.250:9095/api/v1/institution-categories")
      URLSession.shared.dataTask(with: gitUrl!) { (data, response
          , error) in
          let data = data
          print(data)
          do {
              let decoder = JSONDecoder()
              let gitData = try decoder.decode([Root].self, from: data!)
  
          } catch let err {
              print("\nErr", err.localizedDescription)
          }
          }.resume()
  }
  </code></pre>
  
  <p>Struct</p>
  
  <pre><code>struct Root: Codable {
      let  data: [InnerItem]
  }
  struct InnerItem:Codable {
      let  id: Int?
      let  image: String?
      let  name: String?
  
      private enum CodingKeys : String, CodingKey {
          case id = "id", image = "image", name = "name"
      }
  }
  </code></pre>
  
  <p>JSON</p>
  
  <pre><code>{
  "data": [
      {
          "id": 1,
          "name": "Пабы и бары",
          "image": "http://95.46.99.250:9095/storage/photos/beer@2x.png"
      },
      {
          "id": 2,
          "name": "Кафе",
          "image": "http://95.46.99.250:9095/storage/photos/coffee@3x.png"
      },
      {
          "id": 3,
          "name": "Ночной клуб",
          "image": "http://95.46.99.250:9095/storage/photos/0201f7523bc2028f174710b51379e432.png"
      },
      {
          "id": 4,
          "name": "Ресторан",
          "image": "http://95.46.99.250:9095/storage/photos/restaurants@3x.png"
      },
      {
          "id": 5,
          "name": "Караоке-клуб",
          "image": "http://95.46.99.250:9095/storage/photos/microphone.png"
      },
      {
          "id": 6,
          "name": "Суши-бар",
          "image": "http://95.46.99.250:9095/storage/photos/sushi.png"
      },
      {
          "id": 7,
          "name": "Пиццерии",
          "image": "http://95.46.99.250:9095/storage/photos/pizza.png"
      },
      {
          "id": 8,
          "name": "Кальянная",
          "image": "http://95.46.99.250:9095/storage/photos/c111d1e5ad6b90b61ac36836d220ebba.png"
      },
      {
          "id": 9,
          "name": "Общая",
          "image": "http://95.46.99.250:9095/storage/photos/Group 315@3x.png"
      }
  ]
  }
  </code></pre>