Hi Ryan, It is a great module! However, I also got the same problem as Sevarf2.
I have confirmed that everything should be setup, but when I clicked on "Type a URL query string here to test:", it does not have any response.
When I access my web with "service-pages/?template=basic-page&sort=-modified" it returns HTTP 500 "Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request" but I could access the data after appended the "&debug=1". I thought the 404 page mentioned above is Sevarf2 did not setup the custom error page for HTTP 500 page.
If you need my phpinfo() or any other details, I could send those you by PM, thanks for your help!