Thanks for your report. Could you share a link to the form, or let me know what fields are in use please?
I narrowed this down to a checkbox field that has more than 1 option. Like this: https://postimg.cc/dkPYw1bT
If the field contains 1 option – everything works fine, the error happens with 2 and more options.
I suspect that other fields that can have multiple values (e.g. radio buttons) will cause the same error, although I didn’t test that.
When you address this, keep in mind that various Elementor addons add their own field types, e.g. https://www.dynamic.ooo/dynamic-content-for-elementor/features/categories/forms/
Thanks!
Thanks for confirming, I thought it might be the checkbox field, just wanted to make sure we were looking at the same issue. Here you go, that should be fixed in the latest version (2.3.1) which should go live shortly. I’ve also added the asef/excluded_field_types should you need to exclude any additional fields.