Cannot read properties of undefined (reading 'extend')

Can we get the YAML of a form that reproduces the bug please?

Also, can you get the JavaScript stack trace with JavaScript aggregation disabled on the Drupal side please?

YML file attached along with error in browser modal.

I don't see any errors in the log files on the Drupal side or in the browser console, so I'm not sure the JavaScript stack trace is available ?

Maybe related ? ✨ Add support for Webform modal Dialog for anonymous Needs work

Oh, it's in a browser modal. It helps to know that.

If possible can you remove form elements leaving the bare minimum required to reproduce the bug?

Certainly, attached → is the yml file for the webform that ONLY contains the Image Upload element as seen here: https://www.zoweh.org/form/elder-sage-member-profile-photo

I also getting the same issue when, i going to submit the form.

Sourav_Paul, I have the 'Use Ajax' setting disabled (unchecked), but I still receive the error in my browser.

Closing this issue, as this is a Bootstrap 3 issue (not webform). See: https://www.drupal.org/project/drupal/issues/3349942#comment-14981617 🐛 Ajax Undefined Error Closed: duplicate