Updated Drupal to 8.6. This goes with the following updates because it's possible...

[yaffs-website] / web / core / modules / media_library / config / install / core.entity_view_mode.media.media_library.yml

langcode: en
status: true
dependencies:
  enforced:
    module:
      - media_library
  module:
    - media
id: media.media_library
label: 'Media library'
targetEntityType: media
cache: true