Troubleshooting Data Insertion into Supabase Vectorstore with n8n

Below are a few things you can try to troubleshoot your Supabase upload workflow in n8n:

1. Verify Credentials:
   Double-check the Supabase credentials configured in the Supabase credentials section. Ensure that the Supabase URL, anon key, and any other required keys are entered correctly. In some cases, if the credentials are misconfigured, the node may not throw an error but simply fail silently.

2. Confirm Table and Mapping:
   Make sure that the table name and column mapping in your Supabase node exactly match your Supabase database schema. For instance, if you’re using the “Create a new row” operation, check that:

   • The target table exists in your Supabase project.
   • The incoming data is mapped correctly to the corresponding table columns.

   If you’re using the “Map Automatically” option, verify that the field names in your input match the column names in the Supabase table.

3. Check Database Permissions and Policies:
   Supabase might be enforcing row-level security (RLS) or other policies that can block an insert or update without the correct permissions. Verify that:

   • The target table’s policies allow the action you’re trying to perform.
   • Your Supabase keys (anon key or service_role key) have the necessary rights to perform uploads.

4. Review n8n Logs and Debug Mode:
   Even if the node isn’t returning an error message in the workflow output, check the n8n logs. Running n8n in debug mode or reviewing the server logs may reveal backend errors or warnings that aren’t surfaced in the workflow node output.

5. Test a Minimal Workflow:
   Try creating a simple workflow with just the Supabase node using a static payload. This helps isolate whether the issue is with the node’s configuration or with the upstream data (or even with the credentials).

If after these checks the upload is still not working, consider enabling additional logging or verifying the request parameters against what the Supabase API expects. You might also want to cross-check with the Supabase node documentation for any operation-specific requirements.

Let me know if you need further assistance!