Removing input#location_name from form.php breaks datepicker

How to reproduce:

Take form.php from templates and remove DIV containing <label for="location_name">.

Browse to a page containing [emefs_submit_event_form] shortcode.

Open developer console:
TypeError: jQuery(...).autocomplete(...).data(...) is undefined emefs.js:42:0

Reason:
emefs.php:11
uses jQuery("input#location_name") without checking.

https://ww.wp.xz.cn/plugins/events-made-easy-frontend-submit/