Hello- In video 12, we are supposed to add the 'Date Returned' column of the 'Loans' table as a filter to the table on the 'Current Loans' tab. When I add the filter and select 'Blank' as instructed, I receive the following error: "Error fetching data for this visual See details". When I click the see details link the following information is displayed: 'Query (13, 6) Column 'Date Due' in table 'Loans' cannot be found or may not be used in this expression. Can someone please point me in the right direction to get this to work?