I tried to go to the issues topic to report the fact that https://danbooru.donmai.us/forum_topics/15199 was giving me an error message that reads
ActionView::Template::Error exception raised no implicit conversion of nil into String app/models/forum_post.rb:136:in `votable?' app/views/forum_posts/_forum_post.html.erb:47:in `_app_views_forum_posts__forum_post_html_erb__2056788752877131050_46955406085180' app/views/forum_posts/_listing.html.erb:6:in `block in _app_views_forum_posts__listing_html_erb__4096560397800578015_46955406125320' app/views/forum_posts/_listing.html.erb:5:in `_app_views_forum_posts__listing_html_erb__4096560397800578015_46955406125320' app/views/forum_topics/show.html.erb:23:in `_app_views_forum_topics_show_html_erb___527365184086828512_46955406171240' app/controllers/forum_topics_controller.rb:50:in `show'
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However, the issues topic gives me a similar error.