content type error on POST method

[joe_alufaneti]

Plan

Premium

Country

Zimbabwe

Device

ASUS

Operating System

 Windows 11

My Question or Issue

I am getting an error like this: { "error": "unsupported_grant_type", "error_description": "grant_type parameter is missing" } when I try to use the POST method to generate an access token. I am using Flutterflow to build the app and I assume that the Content-Type header is not "/application/json" type but this format "application/x-www-form-urlencoded". So how do I make this thing work?

[Ximzend]

Which code are you using? An error message is not enough to determine the problem.