My guess here is that there is a null value for the CreatedDate field of the directory you're importing:
not-null property references a null or transient value: com.atlassian.crowd.model.directory.DirectoryImpl.createdDate
It looks like you're importing a crowd 2.4.2 backuop. Are you importing this to another 2.4.2 instance? Ensure that you are performing the import into the same version of Crowd that it came from. Or, upgrade the original instance and perform a new export.
For JSM June Challenge #2, share how your non-technical teams like HR, legal, marketing, finance, and beyond started using Jira Service Management! Tell us: Did they ask to start using it or...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events