Hi, 

Was trying to finish the last module in this trail. I already had the package installed from a previous module. Except when I click 'Check Challenge,' I get an error: "There was an unexpected error in your org which is preventing this assessment check from completing: System.QueryException: List has more than 1 row for assignment to SObject."

I'm confused because 1) I'm still learning Salesforce and 2) Besides doing each module like I am asked, I'm not sure where this error could be coming from. 

I did just complete the Process Automation Modules. 

Any suggestions for what this could be from? Any help would be greatly appreciated. 

Thank you.