options.allowedHosts[0] should be a non-empty string.

[YasineNifa]

Hello guys!
I have this error when I try to start the app npm start
Invalid options object. Dev Server has been initialized using an options object that does not match the API schema. options.allowedHosts[0] should be a non-empty string.
The backend is successfully running.
How can I fix that ?

[peanutsee]

Did you check the proxy settings in your package.json?

[YasineNifa]

Yes, I have this "proxy": "http://127.0.0.1:8000" in my package.json file

[peanutsee]

Ok, and what is your environment - node version please?