Is that something I can debug? The api I'm consuming is really simple and just returning this json so I doubt its something wrong with it. If it was network related getting the return request to hubitat I assumed there would be more info about that status code here.
If you control the server/API for where you are making the call you might be able to. Problem is at the API side, could be a server misconfiguration or simply a process on it that is getting hung up.