netbox-community-netbox/netbox/templates/exceptions/import_error.html

{% extends '500.html' %}
{% load i18n %}

{% block message %}
  <p>
    {% trans "A module import error occurred during this request. Common causes include the following:" %}
  </p>
  <p>
    <i class="mdi mdi-alert"></i>
    {% blocktrans %}
      <strong>Missing required packages.</strong> This installation of NetBox might be missing one or more required
      Python packages. These packages are listed in <code>requirements.txt</code> and
      <code>local_requirements.txt</code>, and are normally installed as part of the installation or upgrade process.
      To verify installed packages, run <code>pip freeze</code> from the console and compare the output to the list of
      required packages.
    {% endblocktrans %}
  </p>
  <p>
    <i class="mdi mdi-alert"></i>
    {% blocktrans %}
      <strong>WSGI service not restarted after upgrade.</strong> If this installation has recently been upgraded, check
      that the WSGI service (e.g. gunicorn or uWSGI) has been restarted. This ensures that the new code is running.
    {% endblocktrans %}
  </p>
{% endblock message %}