[ERROR]-Worker is ungracefully killed - ML tutorial example

Hi,

I am working through the Greengrass ML example from the tutorial. When I try to test as instructed here, there is no response in the console:

https://docs.aws.amazon.com/greengrass/latest/developerguide/ml-dlc-console.html#test-app

In runtime.log, I see the following set of errors repeatedly. What does this mean and is it causing the lack of response in the console when I try to test?

[2019-11-17T17:28:26.437Z][WARN]-The group owner of the resource is empty.	{"resource": "/greengrass/ggc/deployment/mlmodel/70b5d7fb0851bc0d3928019a413c13ca2bcbbbac540dfaafbfcd29f5dc2fef6e.zip::1574005838000"}
[2019-11-17T17:28:26.608Z][INFO]-Created worker.	{"functionArn": "arn:aws:lambda:us-west-2:468820349153:function:optimizedImageClassification:1", "workerId": "5d228b98-4f16-4c4b-7f84-df5130c361f0", "pid": 2328}
[2019-11-17T17:28:27.034Z][INFO]-Worker Memory Usage (KB).	{"workerId": "5d228b98-4f16-4c4b-7f84-df5130c361f0", "funcArn": "arn:aws:lambda:us-west-2:468820349153:function:optimizedImageClassification:1", "memSize": 1048576, "memUsed": 11756}
[2019-11-17T17:28:27.034Z][ERROR]-Worker is ungracefully killed.	{"workerId": "5d228b98-4f16-4c4b-7f84-df5130c361f0", "funcArn": "arn:aws:lambda:us-west-2:468820349153:function:optimizedImageClassification:1", "state": "exit status 1"}

Thanks,

Steve