Some user do not have a registration date

users/migrations/0029_auto_20190810_1121.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2.4 on 2019-08-10 09:21
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0028_auto_20190810_1003'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='user',
+            name='date_joined',
+            field=models.DateTimeField(default=django.utils.timezone.now, null=True, verbose_name='date joined'),
+        ),
+    ]