Tips for fixing the Runtime.UnhandledPromiseRejection error when deploying your next.js project on Vercel and Netlify

Encountering an error during deployment on Vercel or Netlify. The same error persists on both platforms. Any suggestions on resolving this issue would be greatly appreciated.

Snippet of the Database code:

import mongoose from 'mongoose';

const connection = {};

async function connect() {
  // Implementation details omitted for brevity
}

async function disconnect() {
  // Implementation details omitted for brevity
}

function convertDocToObj(doc) {
  // Implementation details omitted for brevity
}

const db = { connect, disconnect, convertDocToObj };
export default db;

Error Screenshot

https://i.sstatic.net/3MqBG.png

Error:

(

{"errorType":"Runtime.UnhandledPromiseRejection","errorMessage":"MongooseError: The 
uriparameter toopenUri()
must be a string, got \"undefined\". Make sure the first parameter to
mongoose.connect()ormongoose.createConnection()
is a string.","trace":["Runtime.UnhandledPromiseRejection: MongooseError: The
uriparameter toopenUri()
must be a string, got \"undefined\". Make sure the first parameter to
mongoose.connect()ormongoose.createConnection()
 is a string.","    at process.<anonymous> (/var/runtime/index.js:35:15)","    at process.emit (events.js:314:20)","    at processPromiseRejections (internal/process/promises.js:209:33)","    at processTicksAndRejections (internal/process/task_queues.js:98:32)"]}
)

Answer №1

1)Check your connection string from MongoDB in your .env file and compare it with the data in the Atlas.

Is your username correct? Is your password correct? Is your cluster name the same? Is your database name the same?

1a)Ensure that your .env file is located in the root folder!

2)Verify the Network Access IP in MongoDB Atlas. Is it active? If not, set up a new one.

3)If you are using a VPN, disable it.

4)Lastly, check out https://vercel.com/docs/concepts/projects/environment-variables for more information.

I hope this information helps you! Best of luck ;-)

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