fix django admin user edit

base_django_project/users/admin.py

@@ -41,3 +41,4 @@ class MyUserAdmin(AuthUserAdmin):
     list_display = ('id', 'username', 'name', 'email', 'is_superuser')
     list_display_links = ('id', 'username')
     search_fields = ['id', 'name', 'email', 'username']
+    readonly_fields = ['date_joined',]