I tried to connect mongodb and node server api app (Request URL https://services.suriyashopping.com/api/menu-list) in same droplet. The nodejs server app and mongodb running in single droplet and server placed in sub domain. I have mention my db connection code below and i got conncetion success while run server by “nodemon app.js”. But after then i made request from client to server, then i got some not authorized error. One more query is why DB and related collections not generated automatically while run server via Ubuntu terminal

MongoDB connection code

mongoose.connect('mongodb://user:pwd@127.0.0.1:27017:27017/SURIYAShoppingDB', { useNewUrlParser: true }, (err, res) => {
  if(err) {
    console.log(err);
  }
  else {
    console.log('MongoDB connection succeeded.');
  }
})

Error while request server

{ MongoError: not authorized on SURIYAShoppingDB to execute command { find: “maincategories”, filter: { status: “true”, active_status: “true” }, projection: { __v: false, catgoryImage: false, active_status: false, status: false, createdAt: false, updatedAt: false }, returnKey: false, showRecordId: false } at Connection.<anonymous> (/var/www/services.suriyashopping.com/html/node_modules/mongodb-core/lib/connection/pool.js:443:61) at Connection.emit (events.js:198:13) at processMessage (/var/www/services.suriyashopping.com/html/node_modules/mongodb-core/lib/connection/connection.js:364:10) at Socket.<anonymous> (/var/www/services.suriyashopping.com/html/node_modules/mongodb-core/lib/connection/connection.js:533:15) at Socket.emit (events.js:198:13) at addChunk (_stream_readable.js:288:12) at readableAddChunk (_stream_readable.js:269:11) at Socket.Readable.push (_stream_readable.js:224:10) at TCP.onStreamRead [as onread] (internal/stream_base_commons.js:94:17) ok: 0, errmsg: ‘not authorized on SURIYAShoppingDB to execute command { find: “maincategories”, filter: { status: “true”, active_status: “true” }, projection: { __v: false, catgoryImage: false, active_status: false, status: false, createdAt: false, updatedAt: false }, returnKey: false, showRecordId: false }’, code: 13, name: ‘MongoError’, [Symbol(mongoErrorContextSymbol)]: {} }