How can I fix TypeError: Cannot read properties of undefined (reading 'split') in mongoose-CodePudding

I just connected mongoDB using mongoose.
But I got error TypeError: Cannot read properties of undefined (reading 'split')
How can I fix this error?

Here's my code

export const dbConnect = async () => {
  mongoose.connect(process.env.NEXT_PUBLIC_MONGO_URI);
  const db = mongoose.connection;
  db.on('error', function () {
    console.log('db connection failed!');
  });
  db.once('open', function () {
    console.log('db connected!');
  });
};

And I am using mongoose version 6.5.3, next version 12.2.5

CodePudding user response：

What is value of process.env.NEXT_PUBLIC_MONGO_URI

Format should be like

mongoose.connect('mongodb://localhost/myapp');

mongoose.connect('mongodb://username:password@host:port/database?options...');

CodePudding user response：

I think the problem will be in the connect function. The URI you give in might be wrong. Try logging it our before the function, to make sure it's a correct uri.

https://www.mongodb.com/docs/manual/reference/connection-string/

Here you can find the correct connection string format.