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

1

When I tried to deploy my backend server on render, it is showing this error. In my localhost, it is working properly.

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.
NativeConnection.Connection.openUri (/opt/render/project/src/node_modules/mongoose/lib/connection.js:694:11)
/opt/render/project/src/node_modules/mongoose/lib/index.js:351:10
/opt/render/project/src/node_modules/mongoose/lib/helpers/promiseOrCallback.js:32:5
Oct 16 09:57:58 AM at new Promise ()
Oct 16 09:57:58 AM at promiseOrCallback (/opt/render/project/src/node_modules/mongoose/lib/helpers/promiseOrCallback.js:31:10)
Oct 16 09:57:58 AM at Mongoose._promiseOrCallback (/opt/render/project/src/node_modules/mongoose/lib/index.js:1149:10)
Oct 16 09:57:58 AM at Mongoose.connect (/opt/render/project/src/node_modules/mongoose/lib/index.js:350:20)
Oct 16 09:57:58 AM at Object. (/opt/render/project/src/backend/app.js:43:10)
Oct 16 09:57:58 AM at Module._compile (internal/modules/cjs/loader.js:1068:30)
Oct 16 09:57:58 AM at Object.Module._extensions…js (internal/modules/cjs/loader.js:1097:10)
Oct 16 09:57:58 AM at Module.load (internal/modules/cjs/loader.js:933:32)
Oct 16 09:57:58 AM at Function.Module._load (internal/modules/cjs/loader.js:774:14)
Oct 16 09:57:58 AM at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
Oct 16 09:57:58 AM at internal/main/run_main_module.js:17:47

2

Hi,

From the basis of that error, you’ll need to ensure that wherever you define your Mongo URI, it’s correct and read by your code as expected.

Alan

3

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