Fix permalink link

app/templates/utils.html

@@ -299,7 +299,7 @@
     <nav class="flexbox activity-bar">
     <ul>
         <li>
-            <div><a href="{{ object.url }}"{% if object.is_from_inbox %} rel="nofollow"{% endif %} class="object-permalink u-url u-uid">permalink</a></div>
+            <div><a href="{{ object.url or object.id }}"{% if object.is_from_inbox %} rel="nofollow"{% endif %} class="object-permalink u-url u-uid">permalink</a></div>
         </li>
         <li>
             <time class="dt-published" datetime="{{ object.ap_published_at.replace(microsecond=0).isoformat() }}" title="{{ object.ap_published_at.replace(microsecond=0).isoformat() }}">{{ object.ap_published_at | timeago }}</time>