Webform AJAX submission, same problem with multiple approaches I'm trying to set up a Webform with AJAX submission. I've tried 3 approaches in order to complete it, all 3 resulted in the same problem.

I've tried the Webform AJAX module, I've tried a code from this answer and I've tried another module that is in sandbox only in Drupal.org but it supposed work just fine.

Some of these approaches worked on other Drupal projects on mine but not on the current one.

After clicking on the Submit button, the little AJAX loading gif shows up and then the gif remains there but the submission never finishes, the form doesn't get submitted. Exactly the same problem for all approaches.

This is a JS error I'm getting in console

Uncaught TypeError: Object function ( selector, context ) {
        // The jQuery object is actually just the init constructor 'enhanced'
        return new jQuery.fn.init( selector, context, rootjQuery );
    } has no method 'handleError' jquery.form.js?v=2.52:12
s jquery.form.js?v=2.52:12
window.(anonymous function) jquery.form.js?v=2.52:12
onload


Do you have any idea what could possibly cause a bug like this in Drupal 7 with AJAX webform submission?
I've solved the problem with using jquery.form plugin and submit the form via AJAX with the help of this plugin.

I've found this solution in this answer 

https://drupal.stackexchange.com/a/23650/9297