I tried adding the Case Drivers and SolarBot Ownership component to the SolarBot Impact Dashboard and got this error:

Challenge Not yet complete... here's what's wrong:
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: SNGACOHU

I did this challenge in a new Trailhead Playground too.

I tried adding the Case Drivers and SolarBot Ownership component to the SolarBot Impact Dashboard and got this error:

Challenge Not yet complete... here's what's wrong:
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: SNGACOHU

I did this challenge in a new Trailhead Playground too.