Why doesn't localhost node.js start even though the code below does?

Question

Node.js

Why does localhost not start, although it seems to start, then Error

[email protected]:~/skilap$ node app.js
js-bson: Failed to load c++ bson extension, using pure JS version
express deprecated app.configure: Check app.get('env') in an if statement modules/core/lib/core.js:53:9
connect deprecated multipart: use parser (multiparty, busboy, formidable) npm module instead node_modules/express/node_modules/connect/lib/middleware/bodyParser.js:56:20
connect deprecated limit: Restrict request size at location of read node_modules/express/node_modules/connect/lib/middleware/multipart.js:86:15
connect deprecated methodOverride: use method-override npm module instead modules/core/lib/core.js:57:22
express deprecated app.configure: Check app.get('env') in an if statement modules/core/lib/core.js:192:9
express deprecated app.configure: Check app.get('env') in an if statement modules/core/lib/core.js:196:9
startApp: 434ms
[Error: failed to connect to [127.0.0.1:27017]]

Answer 1

Problem solved, but in a different way.