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HASAN WAQAR 17HASAN WAQAR 17 

Trailhead challenge not completed yet

I am trying to complete this business specialist super badge # 3 and getting this error message 
"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: TQJCVOZK"
NagendraNagendra (Salesforce Developers) 
Hi Hasan,

Sorry for this issue you are encountering.

May I request you please confirm if you are using a brand new developer org for validating the challenge?

If you are using a brand new developer org then please double check that your org doesn't have a namespace enabled.If that doesn't help please give a try by restarting the batch

Still, if the problem persists log out of all accounts and log in once again in a different browser by clearing the cache and cookies which should probably do the trick.

Please let us know if this helps.

Mark this as solved if it's resolved.

Thanks,
Nagendra
HASAN WAQAR 17HASAN WAQAR 17
Thanks for the response.Yes, this is the new playground. Can you please tell me how to disable namespace. not sure if it is enabled or not .