DB Connection Error: connect ECONNREFUSED 127.0.0.1:27017

[tireder]

(node:13552) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect. DB Connection Error: connect ECONNREFUSED 127.0.0.1:27017

where and how do I fix this ? thanks in advance

[ThalKod]

This is probably because you don't have any of Mongodb instance running locally. Try running a mongo instance first and then run the app.