Hi 

I'm working on the Lightning Experience Rollout Specialist superbadge when I get to challenge 7 I'm getting the following error... I'm using a fresh playground for this super badge, tried restarting chrome as well.

'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: MYMTZIJJ'

Ceri

Hi 

I'm working on the Lightning Experience Rollout Specialist superbadge when I get to challenge 7 I'm getting the following error... I'm using a fresh playground for this super badge, tried restarting chrome as well.

'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: MYMTZIJJ'

Ceri