Unsupported grant type

[ghost]

I'm going through the book, when I encountered this error:
// 20200208154004
// http://annas-bookstore.test/oauth/authorize?client_id=4&redirect_uri=http%3A%2F%2Fpassport-oauth-client.test%2Fcallback&response_type=token&scope=

{
"error": "unsupported_grant_type",
"error_description": "The authorization grant type is not supported by the authorization server.",
"hint": "Check that all required parameters have been provided",
"message": "The authorization grant type is not supported by the authorization server."
}