This page explains how to connect a BigQuery data source, including one that uses a file stored in Google Drive, like a Google Sheet (GSheets).
If you encounter an error that looks like this:
403 Forbidden POST https://www.googleapis.com/bigquery/v2/projects/PROJECT-NAME/queries { "code" : 403, "errors" : [ { "domain" : "global", "message" : "Access Denied: BigQuery BigQuery: Permission denied while getting Drive credentials.", "reason" : "accessDenied" } ], "message" : "Access Denied: BigQuery BigQuery: Permission denied while getting Drive credentials.", "status" : "PERMISSION_DENIED" }
You may have forgotten to share your Google Drive source with the service account email. Once that’s been fixed, that error should disappear and you’ll be able to view and query your data source.