title: tableView cell is not showing any content in the cell but it is printing content in console
body: <p>I have created a <code>UITableView</code> and want to show my results from the api to the cell in <code>UITableView</code>. There is a cell class with the outlet of the label in it but no content is showing in the cell. The result is showing in. the console but not in cell label</p>
  
  <p>I have tried to remove and Add new constraints.
  I also added a button to reload the contents of the UITableView but nothing is helping.</p>
  
  <pre><code>    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -&gt; Int {
          return 1
      }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -&gt; UITableViewCell {
          let cell = tableView.dequeueReusableCell(withIdentifier: "customCell", for: indexPath) as! customCellTableViewCell
          var result: String!
          Alamofire.request(booksUrl, method: .get).responseJSON { (response) in
  
              if response.result.isSuccess{
                  let bookJSON : JSON = JSON(response.result.value)
                  let tempResult = bookJSON["items"][0]["volumeInfo"]["title"].stringValue
                  result = tempResult
                  print(tempResult)
              }
          }
  
          cell.bookNameLabel?.text = result
         return cell
      }
  </code></pre>