Reference error id: DRBFDELJ

I have tried this on 2 separate orgs and keep getting the same error. Any fix aside form trying another org because it seems to keep happening regardless of the org.

There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: DRBFDELJ