Okay. I order to find the problem, you should debug step by step. My guess is that the toddle proxy cannot handle your port (8443). When you disable the toddle proxy, you get the 401 error, which is because you are not authenticated, but the call gets through. Do you need an API key to call that endpoint? If so, you should not do that call in toddle at all. This will not be secure, as the credentials will be available in the browser