Why is my Pipelinewise ETL not inserting rows into Snowflake?

Question

I'm using the Pipelinewise ETL utility which implements the Singer.io spec. Data is making it from my postgres instance -> s3 -> Snowflake stage but the data is not being inserted into Snowflake tables. Anyone have any ideas?

I've tried:

• sync_tables
• Deleting ~/.pipelinewise and removing the docker volumes for the pipelinewise container
• Dropping all the Snowflake tables

The tables get recreated, but they're empty...

time=2021-04-07 23:56:09 logger_name=pipelinewise.fastsync.commons.target_snowflake log_level=INFO message=Uploading to S3 bucket: sightly-staging-pipelinewise, local file: /root/.pipelinewise/tmp/pipelinewise_postgres-staging-tap_brand.trend_brand_profile_question_mapping_20210407-235606-434637_fastsync_7NZCNBPA.csv.gz, S3 key: snowflake-imports/pipelinewise_po
stgres-staging-tap_brand.trend_brand_profile_question_mapping_20210407-235606-434637_fastsync_7NZCNBPA.csv.gz
time=2021-04-07 23:56:16 logger_name=pipelinewise.fastsync.commons.target_snowflake log_level=INFO message=Loading snowflake-imports/pipelinewise_postgres-staging-tap_brand.trend_brand_profile_question_mapping_20210407-235606-434637_fastsync_7NZCNBPA.csv.gz into Snowflake...
time=2021-04-07 23:56:19 logger_name=pipelinewise.fastsync.commons.target_snowflake log_level=INFO message=Loading into BRAND."TREND_BRAND_PROFILE_QUESTION_MAPPING_TEMP": {"inserts": 0, "updates": 0, "size_bytes": 147}
time=2021-04-07 23:56:19 logger_name=pipelinewise.fastsync.commons.target_snowflake log_level=INFO message=Deleting snowflake-imports/pipelinewise_postgres-staging-tap_brand.trend_brand_profile_question_mapping_20210407-235606-434637_fastsync_7NZCNBPA.csv.gz from S3...

Note the output:

{"inserts": 0, "updates": 0, "size_bytes": 147}