I cloned an old project from git, it was working well. But now it is showing this error
(node:88186) UnhandledPromiseRejectionWarning: MongooseError: The `uri` parameter to `openUri()` must be a string, got "undefined". Make sure the first parameter to `mongoose.connect()` or `mongoose.createConnection()` is a string. at NativeConnection.Connection.openUri (/Users/mobeenikhtiar/Downloads/slack's_downloaded_data/shopala-backend-56fb4bdcc8bd8024578ea82a0aef49c21a270563/node_modules/mongoose/lib/connection.js:684:11)