Snowflake Loader Documentation - Version incompatibilities and manifest references before definition

And another thing, as mentioned by this guy:

--s3Endpoint as defaults to region us-east-1 causing the error

Exception in thread "main" The authorization header is malformed; the region 'us-east-1' is wrong; expecting 'us-west-2'

You need to manually change s3Endpoint for S3DistCp in playbook.json to your own region. In our case