Requesting token The requested URL was not found on the server

on requesting token on postman I am getting an error stating
{
“message”: “404 Not Found: The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.”,
“type”: “http”
}

  1. 20min
    3.What are Auth url and access token url to be entered

Please follow the steps mentioned in the below document