I wanted to save webform's draft after each field's update, and i did it with help of this post: Webform save draft after each field update .
But it is only working for logged in user, if i try it with anonymous i get ajax error
"An AJAX HTTP request terminated abnormally. Debugging information follows. Path: /system/ajax StatusText: n/a"
Does anybody have any idea why is this happening? thank you ..