UnhandledPromiseRejectionWarning：MongooseServerSelectionError

UnhandledPromiseRejectionWarning：MongooseServerSelectionError

试试看，好像您正在使用MongoDB地图集

mongoose     .connect( uri, { useNewUrlParser: true, useCreateIndex: true, useUnifiedTopology: true })     .then(() => console.log( 'Database Connected' ))     .catch(err => console.log( err ));

并转到

MongoDB Atlas

->

NetworkAccess

->

Edit

->并添加

Current IP address

它！！