Error: Failed to lookup view "404.ejs" in views directory "/home/site/wwwroot/views"
   at Function.render (/node_modules/express/lib/application.js:580:17)
   at ServerResponse.render (/node_modules/express/lib/response.js:1012:7)
   at do404 (/home/site/wwwroot/app.js:496:19)
   at Layer.handle [as handle_request] (/node_modules/express/lib/router/layer.js:95:5)
   at trim_prefix (/node_modules/express/lib/router/index.js:317:13)
   at /node_modules/express/lib/router/index.js:284:7
   at Function.process_params (/node_modules/express/lib/router/index.js:335:12)
   at next (/node_modules/express/lib/router/index.js:275:10)
   at next (/node_modules/express/lib/router/route.js:127:14)
   at /home/site/wwwroot/app.js:45:5