Authorize API Return Error 500

The Url Auth return: There was a server error processing your request

URL: https://signin.infusionsoft.com/app/oauth/authorize?client_id=62d621e7-611a-4a26-aef4-68abd0b0f845&response_type=code&scope=full&redirect_uri=https://braip.test/integracoes/infusionsoft/authozize

The client_id is wrong. We don’t use UUIDs for the client_id. You mostly likely grabbed the App ID and not the key under API Keys. Also you need to URLEncode the redirect_uri.