The issue has been fixed with Apple’s MacOS High Sierra 10.13.4 Beta (17E139).
You can try out the fix by updating your machine to the beta update from Apple.
Let us know if the issue is fixed for you after aforementioned High Sierra beta update.
An error occurred while saving the commentJenn commented
I am also having trouble exporting/packaging PDFS from InDesign. We just updated to CC (just got it yesterday - 4.7.0.00) and I am using High Sierra 10.13.6. It seems to always fail in the background. No missing links, or anything. It seems to package the fonts, links first and then quits on me.