title: I have an error about smart_text after installing django-admin-charts
body: <p>I want to have charts in the admin panel,
  I installed the <strong><code>django-admin-charts</code></strong> package,
  Which said add these to <code>settings.py</code></p>
  <pre class="lang-py prettyprint-override"><code>INSTALLED_APPS = (
           'admin_tools_stats', # this must be BEFORE 'admin_tools' and 'django.contrib.admin'
           'django_nvd3',
  )
  </code></pre>
  <p>But after adding it, it gives this error:</p>
  <pre><code>ImportError: cannot import name 'smart_text' from 'django.utils.encoding' (E: \ test1 \ venv1 \ lib \ site-packages \ django \ utils \ encoding.py)
  </code></pre>
  <p>I searched but didn't find much about smart_text!
  Maybe it has a problem with Django version 4 or Python version 3.10.3?</p>