title: problem django get() returns two values postgresql
body: <p>hello i have been this problem since i change sqlite to postgresql when it was empty i hit migrate and create tables when i create superuser it bugs but still creates admin users , and when its creates i cannt log in so its basic django admin and should not be something different how can i fix this? is it wrong migrate or?</p>
  <p>and this is traceback when i create superuser</p>
  <pre><code>Traceback (most recent call last):
    File &quot;manage.py&quot;, line 15, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/core/management/__init__.py&quot;, line 401, in execute_from_command_line
      utility.execute()
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/core/management/__init__.py&quot;, line 395, in execute
      self.fetch_command(subcommand).run_from_argv(self.argv)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/core/management/base.py&quot;, line 330, in run_from_argv
      self.execute(*args, **cmd_options)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/contrib/auth/management/commands/createsuperuser.py&quot;, line 79, in execute
      return super().execute(*args, **options)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/core/management/base.py&quot;, line 371, in execute
      output = self.handle(*args, **options)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/contrib/auth/management/commands/createsuperuser.py&quot;, line 189, in handle
      self.UserModel._default_manager.db_manager(database).create_superuser(**user_data)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/contrib/auth/models.py&quot;, line 157, in create_superuser
      return self._create_user(username, email, password, **extra_fields)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/contrib/auth/models.py&quot;, line 140, in _create_user
      user.save(using=self._db)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/contrib/auth/base_user.py&quot;, line 67, in save
      super().save(*args, **kwargs)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/db/models/base.py&quot;, line 753, in save
      self.save_base(using=using, force_insert=force_insert,
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/db/models/base.py&quot;, line 801, in save_base
      post_save.send(
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/dispatch/dispatcher.py&quot;, line 177, in send
      return [
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/dispatch/dispatcher.py&quot;, line 178, in &lt;listcomp&gt;
      (receiver, receiver(signal=self, sender=sender, **named))
    File &quot;/var/www/html/web/users/signals.py&quot;, line 11, in create_profile
      Profile.objects.create(user=instance)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/db/models/manager.py&quot;, line 85, in manager_method
      return getattr(self.get_queryset(), name)(*args, **kwargs)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/db/models/query.py&quot;, line 447, in create
      obj.save(force_insert=True, using=self.db)
    File &quot;/var/www/html/web/users/models.py&quot;, line 25, in save
      img = Image.open(self.image.path)
    File &quot;/var/www/html/web/venv/lib/python3.8/site-packages/django/db/models/fields/files.py&quot;, line 57, in path
      return self.storage.path(self.name)
    File &quot;/var/www/html/webst/venv/lib/python3.8/site-packages/django/core/files/storage.py&quot;, line 116, in path
      raise NotImplementedError(&quot;This backend doesn't support absolute paths.&quot;)
  NotImplementedError: This backend doesn't support absolute paths.
  </code></pre>