All of my renamed column headers in my PBIX file are causing the affected charts/tables to display the below error every time I open up my PBIX file in Power BI Desktop. This error never happened prior to the Jan. 09, 2017 Power BI update. What is the fix or workaround for this? Has anybody else seen this? So every time I open or reopen this PBIX file, I have to reinsert these renamed column headers and then rename these column headers in the Fields panel.