Using Power BI Desktop
 
When refreshing a large amount of data using an API data source (with my GetApptPages() function), I randomly get the generic ODBC error: Failed the decryption step. See inner exception.  When I attempt to introspect the 'inner exception' I don't see an error message.  When I click on the Error cell, I get a table structure that contains all the data for that PageNo (see below).  When I test the GetApptPages() function for PageNo 295, I get no error. 
 
How can I get to the root cause of these Error rows in my Power Query? 
 
 
HELP!