(node:1452) DeprecationWarning: open() is deprecated in mongoose >= 4.11.0, use openUri() instead, or set the useMongoClient option if using connect() or createConnection(). See http://mongoosejs.com/docs/connections.html#use-mongo-client

[nahidmbstu]

when i try to start the server , it gives me this warning !!! how anyone help ?

[Yogendra0Sharma]

@nahidmbstu : Try to use mongoose.connect(process.env.MONGODB,{useMongoClient: true});