Error 500 when doing global search with Elasticsearch

I noticed this was failing for me on ops.gitlab.net:

https://sentry.gitlab.net/gitlab/opsgitlabnet/issues/805765

NoMethodError: undefined method `repository' for #<Elasticsearch::LiteProject:0x00007fe7cddf3380>
  from banzai/filter/relative_link_filter.rb:180:in `repository'
  from banzai/filter/relative_link_filter.rb:39:in `block in linkable_files?'
  from gitlab/utils/strong_memoize.rb:30:in `strong_memoize'
  from banzai/filter/relative_link_filter.rb:38:in `linkable_files?'
  from banzai/filter/relative_link_filter.rb:49:in `process_link_attr'
  from banzai/filter/relative_link_filter.rb:24:in `block in call'
  from nokogiri/xml/node_set.rb:238:in `block in each'
  from nokogiri/xml/node_set.rb:237:in `upto'
  from nokogiri/xml/node_set.rb:237:in `each'
  from banzai/filter/relative_link_filter.rb:23:in `call'
  from html/pipeline/filter.rb:127:in `call'
  from html/pipeline.rb:131:in `block in perform_filter'
  from html/pipeline.rb:169:in `instrument'
  from html/pipeline.rb:130:in `perform_filter'
  from html/pipeline.rb:116:in `block (2 levels) in call'
  from html/pipeline.rb:115:in `each'
  from html/pipeline.rb:115:in `inject'
  from html/pipeline.rb:115:in `block in call'
  from html/pipeline.rb:169:in `instrument'
  from html/pipeline.rb:113:in `call'
  from html/pipeline.rb:145:in `to_html'
  from banzai/pipeline/base_pipeline.rb:23:in `block (2 levels) in singleton class'
  from banzai/renderer.rb:133:in `post_process'
  from gitlab/metrics/instrumentation.rb:161:in `block in post_process'
  from gitlab/metrics/method_call.rb:36:in `measure'
  from gitlab/metrics/instrumentation.rb:161:in `post_process'
  from banzai.rb:28:in `post_process'
  from markup_helper.rb:286:in `prepare_for_rendering'
  from markup_helper.rb:115:in `markdown_field'
  from /opt/gitlab/embedded/service/gitlab-rails/app/views/shared/projects/_project.html.haml:59:in `block in _app_views_shared_projects__project_html_haml___1375553665068158133_70316762309720'
  from action_view/helpers/cache_helper.rb:243:in `write_fragment_for'
  from action_view/helpers/cache_helper.rb:233:in `fragment_for'
  from action_view/helpers/cache_helper.rb:164:in `cache'
  from /opt/gitlab/embedded/service/gitlab-rails/app/views/shared/projects/_project.html.haml:19:in `_app_views_shared_projects__project_html_haml___1375553665068158133_70316762309720'
  from action_view/template.rb:157:in `block in render'
  from active_support/notifications.rb:168:in `instrument'
  from action_view/template.rb:352:in `instrument_render_template'
  from action_view/template.rb:155:in `render'
  from action_view/renderer/partial_renderer.rb:342:in `block in render_partial'
  from action_view/renderer/abstract_renderer.rb:42:in `block in instrument'
  from active_support/notifications.rb:168:in `instrument'
  from action_view/renderer/abstract_renderer.rb:41:in `instrument'
  from action_view/renderer/partial_renderer.rb:331:in `render_partial'
  from action_view/renderer/partial_renderer.rb:310:in `render'
  from action_view/renderer/renderer.rb:47:in `render_partial'
  from action_view/helpers/rendering_helper.rb:34:in `render'
  from /opt/gitlab/embedded/service/gitlab-rails/app/views/shared/projects/_list.html.haml:35:in `block in _app_views_shared_projects__list_html_haml___3390110878728861855_70316766480560'
  from /opt/gitlab/embedded/service/gitlab-rails/app/views/shared/projects/_list.html.haml:33:in `each'
  from /opt/gitlab/embedded/service/gitlab-rails/app/views/shared/projects/_list.html.haml:33:in `each_with_index'
  from /opt/gitlab/embedded/service/gitlab-rails/app/views/shared/projects/_list.html.haml:33:in `_app_views_shared_projects__list_html_haml___3390110878728861855_70316766480560'