I'm developing a Lockcontroller interface. Everything seems to be working correctly and I can lock and unlock using my voice. However, the Alexa app in my cellphone says "There is a problem with" my lock. I have a red circle in my screen with an exclamation triangle. I looked at the CloudWatch logs and the discovery event seems to be working fine and I don't receive any other queries from Alexa after the discovery event. The Alexa app is the only thing showing something wrong. What could be causing this ?