Problem with fetching React JSON Form using JS API

[ErikKoinberg]

The code is like this:

var formEl = document.getElementById('id_structure_jsonform'); // "object"
console.log(typeof(reactJsonForm)) // "object"
var form = reactJsonForm.getFormInstance('id_structure_jsonform'); // "undefined"

I have imported the libraries, and the reactJsonForm variable is defined. Furthermore, I can confirm that the field structure exists and I can also find it using document.getElementById().

What could be the reason that the form is not fetched here?

[bhch]

Please upload a sample repo on github so I can reproduce it.

[ErikKoinberg]

I was able to fetch it after calling the code from inside
$(document).ready()
using jQuery. I guess other ways of accessing the content after it is loaded should also work