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

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

{% block message %}
  <p>
    {% trans "A database programming error was detected while processing this request. Common causes include the following:" %}
  </p>
  <p>
    <i class="mdi mdi-alert"></i>
    <strong>{% trans "Database migrations missing" %}.</strong>
    {% blocktrans trimmed %}
      When upgrading to a new NetBox release, the upgrade script must be run to apply any new database migrations. You
      can run migrations manually by executing <code>python3 manage.py migrate</code> from the command line.
    {% endblocktrans %}
  </p>
  <p>
    <i class="mdi mdi-alert"></i>
    <strong>{% trans "Unsupported PostgreSQL version" %}.</strong>
    {% blocktrans trimmed %}
      Ensure that PostgreSQL version 12 or later is in use. You can check this by connecting to the database using
      NetBox's credentials and issuing a query for <code>SELECT VERSION()</code>.
    {% endblocktrans %}
  </p>
{% endblock message %}