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PRAKASH KANYADHARAPRAKASH KANYADHARA 

reference error id: LDYYKPMZ

Hi, I am doing the course Build a simple flow in trailhead. I completed the challenge but I am getting the following 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: LDYYKPMZ
Can anyone help me out here?
AbhinavAbhinav (Salesforce Developers) 
Try challenge after clearing cache or in different browser .

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.

Please close this thread by selecting best answer .

Thanks!