fixes

templates/base.html

@@ -391,7 +391,7 @@
             <div class="user-section">
                 <div class="user-info">
                     <h3>{{ session.username }}</h3>
-                    <p>Member since {{ user.created_at.strftime('%b %Y') if user else '' }}</p>
+                    <p>Member since {{ user.created_at.strftime('%b %Y') if 'user' in locals() else '' }}</p>
                 </div>
                 <a href="{{ url_for('logout') }}" class="btn btn-outline-light">Logout</a>
             </div>