error in get Dwolla.Token

I have a separate function `MyAppWeb.GetConfigs` for getting credentials from config which returns as:

`
%{
  client_id: "key",
  client_secret: "secret"
}
`

But when I pass the funtion to `Dwolla.Token.get` as:

`
Token.get(GetConfigs.get_cred())
`

This error is returned:

`{:error, %Dwolla.Errors{code: nil, message: nil, errors: []}}`