Old version of mongoose

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Hi

Firstly, i need to thanks for this webinar to contribute to the community. I am learning russian and it was so helpful for me but when i tried to run, it does not work.

(node:4005) 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
server is up and running on port 8080

Have a good day all..

Behic