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 commentAnonymous commented
I am operating 10.13.4 as of April 25 and fonts won't package so essentially the file wont get past the font issue and nothing packages. Am I missing a beta update?