I think we don’t intend to block any methods for proxied paths, which a function effectively is. That wouldn’t work on your netlify site for a non-proxy’d path, as our CDN edge server software does not serve from our own backing store to respond to anything except GET and in very few situations (you have a form handler set up at a specific URL), then also POST.
So, let’s get some more details from you:
- What HTTP response code do you get when you try?
- Is there an x-nf-request-id HTTP response header in that response (cf [Support Guide] Netlify Support asked for the 'x-nf-request-id' header? What is it and how do I find it?)?
- Can you tell us a curl call to reproduce so we can take a closer look?