Hi Mayumi!
Thank you for letting us know of the error; it should be fixed now! :hug:
:sweatdrop: Not really, I still got the error ;-; /hugs.
Hi Mayumi,
You receive the error if you leave the URL field as "http://", which is not a valid URL. However, if you erase that field so that it is blank, you should be able to submit the form.