Handler 'handler' missing on module 'index': 'module' object has no attribute 'handler' #3

I tried trigger the function via Cloudwatch Event and also via an S3 event. The invocations fail.

I see this message in Cloudwatch logs for function: Handler 'handler' missing on module 'index': 'module' object has no attribute 'handler'

Any tips on what I am missing?

Thanks.