Hello all, I am stuck on a trailhead challenge..... Protect Your Data in Salesforce  Set Up Account Teams.
This is the error message I have received.....

We couldn’t find 'Amy Daniels' as a support rep. Review the instructions for add

Would appreciate any help

Hello all, I am stuck on a trailhead challenge..... Protect Your Data in Salesforce  Set Up Account Teams.
This is the error message I have received.....

We couldn’t find 'Amy Daniels' as a support rep. Review the instructions for add

Would appreciate any help

Cant finish, geting the error Challenge Not yet complete... here's what's wrong: 
Could not find the published Knowledge article.   but its done 

Please help me in getting this - I tried, but not working -
https://developer.salesforce.com/trailhead/data_security/data_security_fields