Fix a setting

django_backend/settings.py

@@ -99,7 +99,7 @@ DATABASES = {
 CORS_ORIGIN_ALLOW_ALL = True
 
 AUTHENTICATION_BACKENDS = [
-    'django_backend.backend.auth_backend.OIDCTokenAuthBackend',
+    'django_backend.backend.auth.backend.OIDCTokenAuthBackend',
     'django.contrib.auth.backends.ModelBackend',
 ]