error saat buat app chat

permisi saya mau tanya,ini knp jadi begini ya..?,posisi belajar di membuat aplikasi chat padahal saya sudah instaal socket.io dan express

isi package.json:

{
  "name": "appchat",
  "version": "1.0.0",
  "description": "",
  "main": "server.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
"dependencies" :{
  "express" : "*",
  "socket.io":"*"
},

  "author": "",
  "license": "ISC"
}