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Ganesh Deshmukh 4Ganesh Deshmukh 4 

solving the trailhead for verify step got an error:-

There was an unhandled exception. Please reference ID: XQDMFPQF. Error: Faraday::ResourceNotFound. Message: NOT_FOUND: The requested resource does not exist  Note: you may run into errors if you've skipped previous steps.
NagendraNagendra (Salesforce Developers) 
HI Ganesh,

First and foremost it's not clearly mentioned which trailhead challenge you are validating.

But in most of the cases check spelling including case, etc. Is always a good idea when using Trailhead to copy and paste field names and class names from the instructions into your code.

Still, if the problem persists check whether you have added any namespaces in order to validate the challenge,remember trailhead doesn't support namespaces.If that is the issue you can spin up for a brand new developer org(

Kindly mark this post as solved if the information help's so that it gets removed from the unanswered queue and becomes a proper solution which results in helping others who are really in need of it.

Best Regards,