The fix for this is now publicly available in the latest InDesign update, 15.1.1
Please update to the latest version to get the fix.
Adobe InDesign team
An error occurred while saving the commentAnonymous commented
No the fix didn't work. InDesign still crashes when exporting to PDF Interactive format.
This happens on one document, but if I copy the fields to a new document it works well.
Why is this?