ActiveRecord::RecordNotFound for missing pages
ActiveRecord::RecordNotFound for missing pages

Currently a missing page errors in `show` on `should_skip_to_first_child?` because page is nil.
`find_by!` will raise ActiveRecord::RecordNotFound and halt the action and cause a 404
arlyxiao/Spina,arlyxiao/Spina,arlyxiao/Spina