I already send json and but it does not accept it

Tell us what’s happening:
Describe your issue in detail here.

Your project link(s)

solution: https://ffc-node-basics.herokuapp.com/json

*** problem **

Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36

Challenge: Serve JSON on a Specific Route

Link to the challenge: