title: How to remove this Django APP ID type error
body: <p>I'm new to Django and I'm trying to install requirements for a Django project of My teammates after cloning it. but it is not working and I can't also make migrations. whenever I try running migrations I'm getting this error </p>
  
  <pre><code> (name, text, type(obj)))
  TypeError: app_id should be a string instead it is a &lt;class 'NoneType'&gt;
  
  </code></pre>