Hello,

I am geeting this error during Lighting rollout superbadge chalange 9
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: EGTCLFFV

The problem start appearing when I created a report Campaign Influence Lightning but deleted. I empty my organization recycle bin.
Then I created the report Campaign Influence Lightning again but only colud save it in my Personal folder, not able to save it in a public folder (Error: This Report Unique Name already exists or has been previously used. Please choose a different name.) . 
I am using a fresh Trailhead play ground and deleted Org recycle bin