Log if failiing Import while relatedItems present

Success for Plone/front-page
Success for Plone/news
Success for Plone/news/aggregator
Success for Plone/news/conference-website-online
Success for Plone/news/submit-your-talks
Success for Plone/events
Success for Plone/events/aggregator
Fatal Error for Plone/events/deadline-for-talk-submission
Fatal Error for Plone/events/new-event
Success for Plone/events/the-event
Success for Plone/Members
Success for Plone/Members/635861-game-wallpaper.jpg
[{'field': 'relatedItems', 'message': u'Required input is missing.', 'error': RequiredMissing('')}] for Plone/folder.2017-06-15.0667416650
Success for Plone/conference-website-online
Success for Plone/the-event
Success for Plone/the-event/copy_of_talks
Success for Plone/the-event/talks
Success for Plone/the-event/copy2_of_talks
Success for Plone/the-event/annual-meetup
Success for Plone/the-event/folder.2017-06-15.1122498211
Success for Plone/register
Success for Plone/talks
Success for Plone/all-content-that-has-pending-as-wf_state
Success for Plone/copy_of_talks
Success for Plone/folder.2017-06-12.0233392934
Success for Plone/newfolder
Success for Plone/folder.2017-06-15.3091902331
Success for Plone/folder.2017-06-15.0424368405
Success for Plone/document.2017-06-15.6030017143
Success for Plone/folder.2017-06-15.8587122038
Success for Plone/folder.2017-06-19.3937828383
Success for Plone/folder.2017-06-19.3937828383/cabs.zip
Fatal Error for Plone/folder.2017-06-19.3937828383/new-event
Success for Plone/folder.2017-06-19.3937828383/new-page
Success for Plone/folder.2017-06-19.3937828383/this-is-the-first-page
Success for Plone/export.csv
Success for Plone/14-ist.webm