A data engineer needs to use an Amazon QuickSight dashboard that is based on Amazon Athena queries on data that is stored in an Amazon S3 bucket. When the data engineer connects to the QuickSight dash

If there were no connection between QuickSight and Athena, the error would likely be a connection failure or resource not found, not specifically an 'insufficient permissions' error related to data access.

If Athena tables were not cataloged, the query would fail due to unknown schema or table not found, rather than a permissions error on the underlying data itself.

Amazon QuickSight, or the underlying service role it uses for Amazon Athena, must have read access permissions to the specific Amazon S3 bucket where the data files are stored. Without this permission, Athena cannot read the data, leading to an 'insufficient permissions' error.

If the data in the S3 bucket is encrypted (e.g., using SSE-KMS), the QuickSight execution role (or the role Athena assumes) must be granted permissions to decrypt the data using the associated AWS KMS key. Lack of decryption permissions will also result in access denied errors.

QuickSight operates with service-linked roles or explicitly configured IAM roles; if no role was assigned, QuickSight itself might not function, but the error specifically points to data access permissions rather than QuickSight's operational status.