The configuration = was supplied but isn't a known config?

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I have StreamSets up and running in a Docker Linux environment and I am able to connect to it and add in some processors. Currently I just want to learn what this software can do but I am unable to use the Kafka Consumer to receive any messages. I get the following errors :

The configuration = was supplied but isn't a known config
The configuration schema.registry.url = was supplied but isn't a known config

The pipeline continues to run but when I produce messages from the Kafka Producer on another machine they are not making it into the consumer in Stream sets. I know the port 9092 is open on the specific ip address but still wondering why I am seeing these errors? Could it be because I am running inside a Docker image? Could be an issue with the Kafka being on Ubuntu running in EC2?

I checked the sdc.log file and found the following error that might is present multiple times:

WARN BaseWebSocket - WebSocket 'status' error: java.net.SocketTimeoutException: Timeout on Read

In the UI Log: I get the following:

WARN - The configuration schema.registry.url = [] was supplied but isn't a known config. 
INFO - Successfully initialized Kafka Consumer 
WARN - WebSocket 'alerts' error: java.net.SocketTimeoutException: Timeout on Read

Not sure but I guess it might be having trouble actually connecting to the Kafka Topic?

Any suggestions would be greatly appreciated as I have tried the DNS name, Amazon EC2 cloud compute name and the public ip address all without success.