When using a Form Handler with a form on our website, I get the following response, after sending the form:
This is a form handler page with no content. Use the form's direct URL instead.
The page also responds with a http status 400: Bad request.
I have no forms, and never planned on using forms. I have tested the formhandlers before, but now they don't work anymore.
The form handler is set up wit a success and an error page, data forwarding, three form fields, of which one is required.