fix: Server error on email confirmation view

ecommerce/extensions/offer/views.py

@@ -1,6 +1,7 @@
 import logging
 
 from django.http import Http404
+from django.contrib.auth.mixins import LoginRequiredMixin
 from django.shortcuts import get_object_or_404
 from django.views.generic import TemplateView
 from opaque_keys import InvalidKeyError
@@ -14,7 +15,7 @@
 logger = logging.getLogger(__name__)
 
 
-class EmailConfirmationRequiredView(TemplateView):
+class EmailConfirmationRequiredView(LoginRequiredMixin, TemplateView):
     template_name = 'edx/email_confirmation_required.html'
 
     def get_context_data(self, **kwargs):