Hello there,
You should not be submitting: https://boilerplate-express.hyetigran.repl.co/json
The URL must always be the root (home) URL of any project you submit for all challenges.
Other than that, your code looks correct, but this challenge is broken for most users. See: Use the .env File - Issue - freeCodeCamp Support - The freeCodeCamp Forum
Hope this clarifies