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This is on the Automate Your Business Processes  Create a Satisfaction Survey
Add a Screen for Thanking the Customer Trailhead
 

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: VNRLDFAK

This is on the Automate Your Business Processes  Create a Satisfaction Survey
Add a Screen for Thanking the Customer Trailhead
 

Hi,
I am using a flow to allow a user to edit a record.
I can display the current value of all the fields in the record except for picklists - is there any way to do this?

Also all my picklists in the flow are mandatory - do they have to be?