Submit not working

Ok I’ve tried to do a console.log(response) and I got success response. But there is no entry insert into the subscribe panel.

Through the widget. I’ve just solved the issue by tracking down all the way to database insert. The error I’ve got is:

Field ‘registered’ doesn’t have a default value.

Hence it fails. I’ve changed the table column ‘registered’ to accept NULL value (by removing not null).