What does 'Only a ReactOwner can have refs.' mean?

Question

I have a simple react component with a form in it:

var AddAppts = React.createClass({
    handleClick:          


        

Answer 1

Rearranging the script resolved the issue.

Wrong.

Correct

Reference https://github.com/gcanti/tcomb-form/issues/107#issuecomment-150891680