Datasource troubleshooting

• Test fails — verify host networking from the Groove container/pod, credentials, and TLS requirements.
• CSV upload errors — ensure a header row and file size ≤ 1 MB (CSV).
• Google Sheets OAuth — broker misconfiguration is the usual cause (broker).
• SaaS execute errors — expected for RapidAPI-style SaaS; use REST instead (SaaS).
• Prepared statement issues — see Prepared statements.