Proxy error in example-simple-react

[nielsenjared]

Hello!
I'm an instructor at Trilogy and we're nearing the end of the React curriculum. I saw you post this repo on Slack and thought I would use it in my class today. But, when I run it locally I'm getting a proxy error:

Proxy error: Could not proxy request /api/auth from localhost:3000 to http://localhost:3001/.
[1] See https://nodejs.org/api/errors.html#errors_common_system_errors for more information (ECONNREFUSED).

In the past I've fixed this by setting a target in the client package.json:
"proxy": { "/api/*": { "target": "http://localhost:3001/", "changeOrigin": true } },

But the error persists.

[grbsk]

ECONNREFUSED seems to indicate the proxied binding (localhost:3001) isn't running (probably crashed). Take a look at the terminal window where you started the servers and see if there are errors (probably need to scroll to the top, past the output from the create-react-app running the client). Things that could be the problem:

1. mongod not running (all examples use Mongo)
2. not running yarn start from the root of the example (not in /client; that only runs the front end dev server)
3. didn't yarn install in the root of the repo, the root of the example, or /client (for the react examples)
4. didn't create or edit a .env file to insert your spotify and twitter client IDs and secrets.