There was an unhandled exception. Please reference ID: KLNTXAZY. Error: Faraday::ClientError. Message: MALFORMED_QUERY: When retrieving results with Metadata or FullName fields, the query qualificatio​ns must specify no more than one row for retrieval. Result size: 2

I have a flow that allows you to choose the product type, then the product, which creates the product, then asks if you want to add more products and goes back to the start. Seems to work perfectly. Not sure what this error is.

While I am using  a new Playground for Trailhead, I am getting below error while checking the chanllenge 2 on Process Automation Super Badge

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: YBKFMFRL

Anyone has any idea about this error..??