title: Invariant Violation: Module AppRegistry is not a registered callable module (calling runApplication) upgrading from 0.60.5 to 0.63.3
body: <p><a href="https://i.stack.imgur.com/zNoxI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zNoxI.png" alt="enter image description here" /></a></p>
  <p>I am facing issues in upgrading from <code>0.60.5 to  0.63.3</code> version. the app is stuck and not running.  Error is</p>
  <blockquote>
  <p>Invariant Violation: Native modules cannot be null.</p>
  <p>Invariant Violation: Module AppRegistry is not a registered callable
  module (calling run application).</p>
  </blockquote>
  <p>Can anybody tell me how to fix it?</p>