dbcat can not scan BigQuery

[dimabuzz-jtp]

$ dbcat catalog add-bigquery --name test-dbcat --project-id test-project \
--username pii-catcher@test-project.iam.gserviceaccount.com \
--key-path /Users/bob/.keys/test-project-29290b444555.json

$ dbcat catalog scan --source-name test-dbcat

No schema or tables scanned. Ensure include/exclude patterns are correct and database has tables

But dataset and tables exist in the GCP project.