I created a sample order confirmation module  which works fine on GET request on localhost port 8069, return a pop up saying order is confirmed

localhost:port /shop / orderconfirmed

But when I install the module on my hosted service, its throwing http 404 on GET request.

Can you please let me know what is missing -- http GET works fine on localhost but throws 404 when the module is installed on hosted service and using localhost:port /shop / orderconfirmed