notifications/templates/notifications/notification_list.html

@@ -11,6 +11,7 @@
     <div class="notifications">
       {% if user|unread_notification_count %}
         <form action="{% url 'notifications:notifications-mark-read-all' %}" method="post">
+          {% csrf_token %}
           <button class="btn mb-3" type="submit"><i class="i-eye"></i> {% trans 'Mark all as read' %}</button>
         </form>
       {% endif %}