Are you running the project locally? If you’re, I also experienced a similar issue in chrome. I suppose other chromium derivatives like Brave and Edge will exhibit similar behavior. I’m not sure about other browsers.
I noticed the request from FCC to localhost is being blocked due to CORS policy. You should see this when you open the browser console. The reason this happens is because, by default, under the Local Network Access restrictions, chrome disallows requests to local networks, including loopback address 127.0.0.1(also known as localhost) on which your solution is running.
Ideally, FCC is supposed to request explicit permission from you the user before making a request to a service running on your local network. However, this has to be implemented on the FCC codebase.
Meanwhile you can disable the restriction in the settings at chrome://flags#local-network-access-check. If you’re using other chromium based browsers like brave, simply replace the chrome: scheme with brave:. The test should pass.