While generating content in devel - fatal error getFileUri() on a non-object in core/modules/image/image.field.inc on line 266

I got this nasty error when trying to generate content http://www.drupal8.oc/admin/config/development/generate/content

( ! ) Fatal error: Call to a member function getFileUri() on a non-object in /DRUPAL8/core/modules/image/image.field.inc on line 266

This could be a devel issue, but seems like core initially.