I am receiving an error on the last step of the Create Reports and Dashboards for Sales and Marketing Managers > Visualize your data Module:
"​​​​​​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: HXAWQXQK"

I haven't had any issue with any of the steps until this point.