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Sumedh More 8Sumedh More 8 

Error Id: ZKWYMXKF

App Customization Specialist Challange 5(Last Challange)

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: ZKWYMXKF
AbhinavAbhinav (Salesforce Developers) 
Try challenge in different browser or after clearing cache.

If issue still persist you can connect with trailhead teamTrailhead 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.

if it helps please close this thread by selecting best answer .

Thanks!
Sumedh More 8Sumedh More 8
Hi Abhinav, I tried by changing browser and clearing of cache but problem still persists. Could you please look after it. Thank you, Sumedh More. Senior Software Engineer.