[ERROR] KeyError: 'Records'

[chaithra-kv-deel]

When I run //demo.sh from protection folder I'm getting an error

[ERROR] KeyError: 'Records'
Traceback (most recent call last):
  File "/var/task/lambda_function.py", line 102, in lambda_handler
    bucket_name = event['Records'][0]['s3']['bucket']['name']

Could anyone help us?