500 Error When Trying To Edit Form

Your software
My Mautic version is: 6.0.0
My PHP version is: 8.1.32
My Database type and version is: 10.5.28-MariaDB-0+deb11u1

Your problem
My problem is:

After updating to Mautic 6.0.0 whenever we attempt to edit a previously working form we get the error indicated below.

These errors are showing in the log:

[2025-04-27T15:26:11.523895+00:00] mautic.CRITICAL: Uncaught PHP Exception Twig\Error\RuntimeError: “Key “group” for sequence/mapping with keys “operator, points” does not exist.” at /path/to/mautic/public_html/app/bundles/LeadBundle/Resources/views/Action/points.html.twig line 20 {“exception”:“[object] (Twig\Error\RuntimeError(code: 0): Key "group" for sequence/mapping with keys "operator, points" does not exist. at /path/to/mautic/public_html/app/bundles/LeadBundle/Resources/views/Action/points.html.twig:20)”} {“hostname”:“server.domain.com”,“pid”:1633287}

Steps I have tried to fix the problem:

php bin/console cache:clear
php bin/console mautic:assets:generate

Thanks for any help and suggestions.