Help me troubleshoot my Discourse SSO

I think that error message is coming from Amazon S3. There might be some useful details about how to fix the issue in this topic: Backups have started failing due to server time being wrong. There is some more information here: https://stackoverflow.com/questions/4770635/s3-error-the-difference-between-the-request-time-and-the-current-time-is-too-la.