Post methods of api are not working

[Utkarsh13-ray]

When a user calls the API at /shifts/{id}/book or shifts/{id}/cancel the API doesn't respond and keeps loading.

How to regenerate this error:

Run the server.
fetch all the available shifts.
Use Postman/thunderclient to book a shift by an ID of the shift.
the request will not respond and will be kept loading.
Platform:
OS: Windows 10;
Browser: Chrome [latest till today].
tool: Postman and Axios.

[Harman2003]

You need to use node v12 to make it work properly, otherwise need to setup your own server, because their one is outdated.

[Harman2003]

@rajathans Sir please check my submission, I mailed you as well the hiring team 10 days ago.