Create a New React.js App

Running npm start locally with the original script react-scripts start in package.json works, but using sst-env --react-scripts start results in the error below:

sst-env: Cannot find matching SST environment outputs in C:\Users\dimitri\code\test-project\.build\static-site-environment-output-values.json. Ensure the StaticSite points to C:\Users\dimitri\code\test-project\frontend

The file static-site-environment-output-values.json contains an empty array by the way.

Any thoughts?