title: Flutter error: the argument type 'dynamic' can't be assigned to the parameter type 'Iterable<dynamic>'
body: <p>Kindly assist.
  I am attempting to create a model using the JSON to Dart tool <a href="https://app.quicktype.io/" rel="nofollow noreferrer">https://app.quicktype.io/</a></p>
  <p>The aim is to retrieve a list of all companies (with their properties) from a JSON API.</p>
  <p>I am getting the below errors:</p>
  <ul>
  <li>the argument type 'dynamic' can't be assigned to the parameter type Map&lt;String, dynamic&gt;</li>
  <li>the argument type 'dynamic' can't be assigned to the parameter type Iterable</li>
  <li>the argument type 'dynamic' can't be assigned to the parameter type Int</li>
  </ul>
  <p>Please refer to the image below.
  <a href="https://i.stack.imgur.com/57RLb.png" rel="nofollow noreferrer">the argument type 'dynamic' can't be assigned to the parameter type...</a></p>
  <p>Thank you.</p>