Hello community!
I have a problem validating Challenge 1 on the Superbadge App Customization Specialist.
I have already created the new playground and installed the package correctly.
When trying to validate the challenge, the message appears
"Challenge Not yet complete... here's what's wrong:
There was an unexpected error in your org which is preventing this assessment check from completing: System.QueryException: List has no rows for assignment to SObject"
I've also used previous suggestions as well.
Could anybody help me?

Hello community!
I have a problem validating Challenge 1 on the Superbadge App Customization Specialist.
I have already created the new playground and installed the package correctly.
When trying to validate the challenge, the message appears
"Challenge Not yet complete... here's what's wrong:
There was an unexpected error in your org which is preventing this assessment check from completing: System.QueryException: List has no rows for assignment to SObject"
I've also used previous suggestions as well.
Could anybody help me?