Added comma in urls.py

widget_group_25/widget_group_25/urls.py

@@ -21,6 +21,6 @@ urlpatterns = [
     path('announcements/', include('announcementboard.urls', namespace="announcementboard")),
     path('forum/', include('forum.urls', namespace="forum")),
     path('calendar/', include('calendarapp.urls', namespace="calendar")),
-    path('assignments/', include('assignments.urls', namespace="assignments"))
+    path('assignments/', include('assignments.urls', namespace="assignments")),
     path('admin/', admin.site.urls)
 ]