Problem completing .env challenge

Basic Node and Express - Use the .env File ->
having a problem with submitting the challenge

var response = "Hello World"; 

app.get("/json", function(req, res) {
  console.log(process.env.MESSAGE_STYLE,"<=message style");
  if (process.env.MESSAGE_STYLE === "uppercase") {
    "message": response.toUpperCase()
  } else {
    "message": response

My .env file configration ->


getting Error says :sleepy:

// running tests The response of the endpoint


should change according to the environment variable


// tests completed

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Challenge: Use the .env File

Link to the challenge: