django2.2: relpace django.core.urlresolvers by django.urls

eboutic/views.py

@@ -28,7 +28,7 @@ import hmac
 import base64
 from OpenSSL import crypto
 
-from django.core.urlresolvers import reverse_lazy
+from django.urls import reverse_lazy
 from django.views.generic import TemplateView, View
 from django.http import HttpResponse, HttpResponseRedirect
 from django.core.exceptions import SuspiciousOperation