Fixed slash end of calendar urls. Fixed error message for incorrect year

faerun_calendar/urls.py

@@ -4,7 +4,7 @@ from . import views
 
 urlpatterns = [
     path('', views.index, name='index'),
-    path('<int:year>', views.year_page, name='index'),
+    path('<int:year>/', views.year_page, name='index'),
-    path('<int:year>/<int:month>/<int:day>', views.day_page, name='index'),
+    path('<int:year>/<int:month>/<int:day>/', views.day_page, name='index'),
 ]
 

faerun_calendar/views.py

@@ -81,11 +81,14 @@ def day_page(request, year: int, month: int, day: int):
 
 
 def year_page(request, year: int):
+    params = None
+
     try:
         year_data = YearData.objects.get(number=year)
     except YearData.DoesNotExist:
-        return HttpResponseNotFound('<h1>404 Not Found</h1>')
+        params = {'type': 'error', 'error_type': 'year'}
 
+    if not params:
         month_data = MonthData.objects.all().order_by('number')
         calendar_data = CalendarData.objects.first()
         events = Event.objects.all()