MQTT Ingress URL error

If I do not put a fwd slash '/' at the end of the url, the agent will not connect to the broker.  It should not need a slash.
Adapters {
   
 device {
	**Url = mqtt://10.1.2.3/**
        MqttPort = 1883
        MqttUserName = user1
        MqttPassword = pwd1
        Topics = "machine1/ingress/#"
        MqttClientId = me
 }
} 