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 teamAnonymous supported this idea ·
An error occurred while saving the commentAnonymous commented
for some reason my creative cloud says I am up to date and yet I do not have the 15.1.1 version - I am having this same issue with the crash when exporting.