ActionView::Template::Error: undefined method `author' for nil:NilClass
https://sentry.gitlap.com/gitlab/gitlabcom/issues/20994/
NoMethodError: undefined method `author' for nil:NilClass
app/views/projects/wikis/show.html.haml:15:in `_app_views_projects_wikis_show_html_haml__1218474085056617756_70282324694480'
#{@page.commit.author.name}
app/controllers/projects/wikis_controller.rb:17:in `show'
render 'show'
lib/gitlab/middleware/multipart.rb:93:in `call'
return @app.call(env) if encoded_message.blank?
lib/gitlab/request_profiler/middleware.rb:14:in `call'
@app.call(env)
lib/gitlab/middleware/rails_queue_duration.rb:20:in `call'
@app.call(env)
...
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ActionView::Template::Error: undefined method `author' for nil:NilClass
ActionView::Template::Error: undefined method `author' for nil:NilClass