I got an error in lightning experience superbadge "There was an unexpected error Usually this is due to some pre-existing configuration or code in the challenge Org reference error id: NLGZUJWR" p

Please note that Questions about how to pass Trailhead challenges are not on topic, because these challenges are intended to be independent demonstrations of your abilities.

Trailhead Help (https://trailhead.salesforce.com/en/help?support=home)can provide assistance for situations where Trailhead does not appear to be functioning correctly. You can reach out to them if this is the case.