title: redux form : Invalid prop `form` of type `object`
body: <p>When I use redux form, get the follow error. There is a [object Object] key in state tree form, in the picture, category_edit key is generated by call <code>initialize</code> function with me.</p>
  
  <p><code>
  Failed prop type: Invalid prop `form` of type `object` supplied to `Form(CategoryEdit)`, expected `string`.
  </code></p>
  
  <p><a href="https://i.stack.imgur.com/kvULS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kvULS.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/ck494.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ck494.png" alt="enter image description here"></a></p>