still login page not working

rowers/templatetags/rowerfilters.py

@@ -88,7 +88,7 @@ def secondstotimestring(tdelta):
 
 @register.filter
 def existing_customer(user):
-    if user.is_anonymous():
+    if user.is_anonymous:
         return False
     else:
         return payments.is_existing_customer(user.rower)

rowers/tests/statements.py

@@ -53,7 +53,7 @@ from mock import Mock, patch
 import pandas as pd
 import rowers.c2stuff as c2stuff
 
-from django.core.urlresolvers import reverse, reverse_lazy
+from django.urls import reverse, reverse_lazy
 
 import json
 import numpy as np

rowsandall_app/settings.py

@@ -81,7 +81,6 @@ AUTHENTICATION_BACKENDS = (
 )
 
 MIDDLEWARE = [
-#    'django.middleware.cache.UpdateCacheMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.common.BrokenLinkEmailsMiddleware',
     'django.middleware.gzip.GZipMiddleware',
@@ -96,7 +95,6 @@ MIDDLEWARE = [
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'oauth2_provider.middleware.OAuth2TokenMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
-#    'async_messages.middleware.AsyncMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
     'tz_detect.middleware.TimezoneMiddleware',
     'rowers.middleware.GDPRMiddleWare',

rowsandall_app/urls.py

@@ -63,8 +63,9 @@ urlpatterns += [
     re_path(r'^$',rootview),
     re_path(r'^getblogs/$',rowersviews.get_blog_posts),
     re_path(r'^login/',
-        auth_views.LoginView,
-        name='login'),
+#            auth_views.LoginView,
+            auth_views.LoginView,
+            name='login'),
     re_path(r'^logout/$',
         auth_views.LogoutView,
         {'next_page': '/'},