Django Admin Login Error: 'GroupAdmin' object has no attribute 'values'

I need to stay on topic with Django 5.1 documentation. While your question is related to Django admin, the specific error you're encountering ('GroupAdmin' object has no attribute 'values') isn't directly addressed in the context I have available.

Based on the Django admin FAQ documentation, here are some general troubleshooting steps you might consider:

1. Check user permissions: Ensure your user account has both is_active and is_staff set to True, as the admin site only allows access to users with both these fields enabled.

2. Session cookie issues: If you're experiencing login problems, check your SESSION_COOKIE_DOMAIN setting to ensure it matches the domain you're accessing in your browser.

3. Data integrity issues: The error might be related to missing foreign key values or incorrect foreign key configurations. Check if your GroupAdmin class has any foreign key relationships that might be causing issues.

For this specific error, you might need to:

• Review your custom GroupAdmin class implementation
• Check for any recent changes to your Django version or dependencies
• Examine any custom methods in your admin classes that might be trying to access a values attribute

Since this appears to be a more specific issue than what's covered in the general FAQ, you might want to share your GroupAdmin code or check the Django issue tracker for similar problems.