Checkboxes Not Passing Multiple for Gatsby Site through Netlify Form

[jen]

Just tested and had a look at the POST that was sent from your site. I think the issue might be your content-type header:

@Dennis

Make sure that you POST your form request (not GET) with a Content-Type of application/x-www-form-urlencoded in most cases. However, if and only if you are submitting the form with a file upload then the Content-Type needs to be multipart/form-data instead.

Let me know if that fixes the issue.