URL Shortener MicroService - Not Passing 2/4 test

Tell us what’s happening:
I am trying to compete the URL Shortener Microservice project, for back end development. I can pass all of the test when I try them myself, but when I submit the URL, it won’t pass 2/4 test. These are the two test,
–You can POST a URL to /api/shorturl and get a JSON response with original_url and short_url properties. Here’s an example: { original_url : 'https://freeCodeCamp.org', short_url : 1}

–When you visit /api/shorturl/<short_url> , you will be redirected to the original URL.

Your project link(s)

solution: https://replit.com/@razemnuj/boilerplate-project-urlshortener#server.js

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36

Challenge: URL Shortener Microservice

Link to the challenge: