Cought unexpected DoesNotExist exception in EventSeriesForm

src/events/views.py

@@ -7,7 +7,7 @@ from django.urls import reverse
 from django.db.models import Q
 from django.http import Http404
 from django.http import HttpResponse
-from django.shortcuts import redirect
+from django.shortcuts import redirect, get_object_or_404
 from django.utils import timezone
 from django.utils.translation import ugettext as _
 from django.views import generic
@@ -188,7 +188,7 @@ class EventSeriesForm(mixins.EventDetailMixin, PermissionRequiredMixin,
     template_name = 'events/eventseries_form.html'
 
     def get_object(self, queryset=None):
-        self.event = models.Event.objects.get(pk=self.kwargs['pk'])
+        self.event = get_object_or_404(models.Event, pk=self.kwargs['pk'])
         if self.event.event_series:
             self.event = self.event.event_series
         return self.event