sql server – sp_Blitz – RegOpenKeyEx() returned error 2

I’m running the latest sp_Blitz script on a SQL 2016 Std server on a Windows Server 2016 physical box. I’m getting the following error. What could be causing this and how do I troubleshoot it?

RegOpenKeyEx() returned error 2, ‘The system cannot find the file
specified.’ Msg 22001, Level 1, State 1 Warning: Null value is
eliminated by an aggregate or other SET operation. Msg 0, Level 11,
State 0, Line 0 A severe error occurred on the current command. The
results, if any, should be discarded.