Add check for empty chan category in featured chan

src/invidious/views/channel/featured_channels.ecr

@@ -73,16 +73,16 @@
                     </div>
                 </details>
             </div>
+            </div>
         <% end %>
     <% else %>
         <h3 class="pure-u-1">
             <%= translate(locale, "This channel doesn't feature any other channels.")%>
         </h3>
     <% end %>
-
-    <!-- #<div class="channel-section pure-u-1 pure-u-md-1-4 pure-u-lg-1-6"> -->
 </div>
 
+<% if !featured_channel_categories.empty? %>
     <div class="pure-g h-box">
         <div class="pure-u-1 pure-u-lg-1-5">
             <% if previous_continuation %>
@@ -106,10 +106,10 @@
                     <% title = featured_channel_categories[0].title %>
                 <% end %>
 
-
                 <a href="/channel/<%=channel.ucid%>/channels/<%=category_param%>?continuation=<%=HTML.escape(next_cont_token)%>&offset=<%=offset.not_nil!+1%>&title=<%=HTML.escape(title)%><%=additional_url_param%>">
                     <%= translate(locale, "Next page") %>
                 </a>
             <% end %>
         </div>
     </div>
+<% end %>