Hi, I am getting following error when doing Lightning Experience Reports & Dashboards Specialist superbadge - Challenge 7: "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: BMABXNPH"

I tried to refresh, delete cookies, but it didn't help.
Could someone help me, please. Thank you.