These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
CloudFlare should properly pass an HTTP PATCH request. HTTP PATCH requests should have a request body, is it possible that your request is missing a body?
If you’re still having trouble, could you either post here (or contact support) the request header and body you’re using in your request.
The developer cloud
Scale up as you grow — whether you're running one virtual machine or ten thousand.
From GPU-powered inference and Kubernetes to managed databases and storage, get everything you need to build, scale, and deploy intelligent applications.