Okay, so I tested it first and it worked for me (no error), but I went ahead and implemented the fix and tested it again just in case.
To give it a try, you’ll need to grab a fresh copy of the spreadsheet. When you copy it to your drive, you should get a screen that tells you “This app isn’t verified.” For the scripts to function, make sure you click “Advanced” in the bottom left and give it permission to run. Also, be aware that it takes a minute for the export to complete.
If it doesn’t work at that point, can you tell me if you’re getting an error just with the export, or does it happen with any of the other functions? Thanks!