Hello, I am writing a server that answers to a POST request with a multipart/form-data message. On the client in Javascript I then want to access the form-data via the usual response.formData() function. Alas I seem to make something wrong when creating the mulitpart message, Firefox always complains with "Cannot parse FormData". Is there a way to get Firefox to be more verbose and log the actual problem why it cannot parse the response? That way I could try to fix my server.