I have this nvdia text to image code "" I want to make api of this, user will enter image propmt as parameters in endpoint, here is my api key "", When server start then show message in Console with server starterd pn port {port} if successful image get then show else show json response error message. 

Remember, I want to upload this in Vercel so give me Vercel.json and package.json also. And in last show me my example api with parameters.