in awslambdaric/bootstrap.py [0:0]
def make_error(error_message, error_type, stack_trace, invoke_id=None):
result = {
"errorMessage": error_message if error_message else "",
"errorType": error_type if error_type else "",
"requestId": invoke_id if invoke_id is not None else "",
"stackTrace": stack_trace if stack_trace else [],
}
return result