Recibo este error mientras lo implemento en Vercel/Netlify. Recibir el mismo error para Vercel y Netlify durante la implementación. Cualquier paso para resolver este problema sería útil.

Código de la base de datos:

 import mongoose from 'mongoose'; const connection = {}; async function connect() { if (connection.isConnected) { console.log('already connected'); return; } if (mongoose.connections.length > 0) { connection.isConnected = mongoose.connections[0].readyState; if (connection.isConnected === 1) { console.log('use previous connection'); return; } await mongoose.disconnect(); } const db = await mongoose.connect(process.env.MONGODB_URI, { // useNewUrlParser: true, // useUnifiedTopology: true, }); console.log('new connection'); connection.isConnected = db.connections[0].readyState; } async function disconnect() { if (connection.isConnected) { if (process.env.NODE_ENV === 'production') { await mongoose.disconnect(); connection.isConnected = false; } else { console.log('not disconnected'); } } } function convertDocToObj(doc) { doc._id = doc._id.toString(); doc.createdAt = doc.createdAt.toString(); doc.updatedAt = doc.updatedAt.toString(); return doc; } const db = { connect, disconnect, convertDocToObj }; export default db;

Captura de pantalla de error

Error:

( {"errorType":"Runtime.UnhandledPromiseRejection","errorMessage":"MongooseError: The parameter to openUri() must be a string, got \"undefined\". Make sure the first parameter to mongoose.connect() or parameter to () is a string.","trace":["Runtime.UnhandledPromiseRejection: MongooseError: The must be a string, got \"undefined\". Make sure the first parameter to connect() or mongoose.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)"]} )