I am completing a challenge on Admin Beginner: Chatter Basics - Approving Records from the Feed.  When I check my challenge I receive the mession below....but I did create the approval process.  What is wrong?
"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.DmlException: Process failed. First exception on row 0; first error: NO_APPLICABLE_PROCESS, No applicable approval process was found.: []"

I am completing a challenge on Admin Beginner: Chatter Basics - Approving Records from the Feed.  When I check my challenge I receive the mession below....but I did create the approval process.  What is wrong?
"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.DmlException: Process failed. First exception on row 0; first error: NO_APPLICABLE_PROCESS, No applicable approval process was found.: []"