My leader sir, I am here again ooooo. Apparently, I have concluded the code along of the above project, like I noted in my last question when I scaffold a new project template, it already came with a Swagger template already registered in the Startup class. However, I commented out the default swagger registration in the startup class so I could follow yours as described above but when I run the project it throws an error. When I launch the project it goes to this path https://localhost:44366/swagger/index.html and I see a default swagger UI similar to yours. But when I navigate to /genre it throws an error "This localhost page can’t be found No webpage was found for the web address: https://localhost:44366/genre HTTP ERROR 404" Here is a link to my github repo of my codes https://github.com/dyagzy/.Net5RestApi I will appreciate if you can help debug this... now I will move on to code up the Unit test project while I wait for you... Thank you in advance chief.