Set up for theme toggling

src/invidious/helpers/errors.cr

@@ -85,6 +85,7 @@ def error_template_helper(env : HTTP::Server::Context, status_code : Int32, mess
 
   locale = env.get("preferences").as(Preferences).locale
 
+  error_message = translate(locale, message)
   unfound_tv_box_dark_theme = File.read("assets/404_tv_box_dark_theme.svg")
   next_steps = error_redirect_helper(env)
 

src/invidious/views/error.ecr

@@ -3,6 +3,9 @@
 <% end %>
 
 <div class="h-box">
+    <a id="error-parent">
+        <%= error_message %>
+    </a>
     <%= unfound_tv_box_dark_theme %>
     <%= next_steps %>
 </div>