Notice: Undefined index: #wrapper_id in theme_draggable_list()

I'm getting this error:

Notice: Undefined index: #wrapper_id in theme_draggable_list() (line 115 of /home/hearing/public_html/sites/all/modules/webform_draggable_list/webform_draggable_list.module).
Notice: Undefined index: #wrapper_id in theme_draggable_list() (line 118 of /home/hearing/public_html/sites/all/modules/webform_draggable_list/webform_draggable_list.module).

Using this version: 7.x-1.3+1-dev