@@ -0,0 +1,478 @@
+# -*- coding: utf-8 -*-%0Afrom __future__ import unicode_literals%0A%0Afrom django.db import models, migrations%0Aimport utils%0A%0A%0Aclass Migration(migrations.Migration):%0A%0A    dependencies = %5B%0A        ('problems', '0001_initial'),%0A    %5D%0A%0A    operations = %5B%0A        migrations.AlterField(%0A            model_name='part',%0A            name='secret',%0A            field=models.TextField(default=b'%5B%5D', validators=%5Butils.is_json_string_list%5D),%0A            preserve_default=True,%0A        ),%0A    %5D%0A

Add a missing migration for the secret validator