Hi Team, i'm doing the module Build a Discount Calculator in Step 4 and when I try to verify my challenge with a Trailhead playground I receive the next error:

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: GJODIZOO

Hi Team, i'm doing the module Build a Discount Calculator in Step 4 and when I try to verify my challenge with a Trailhead playground I receive the next error:

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: GJODIZOO