new_contents: # Generated by Django 2.2.12 on 2020-04-12 11:11
  
  import django.contrib.postgres.fields.hstore
  from django.db import migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('pgallery', '0004_auto_20160416_2351'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='photo',
              name='exif',
              field=django.contrib.postgres.fields.hstore.HStoreField(db_index=True, default=dict, editable=False),
          ),
      ]
  
subject: Add missing migration file for exif change.