Error upgrading to version 2.20
Upgrading 2.20 on Civi 5.33.2 using https://lab.civicrm.org/extensions/civirules/-/archive/2.20/civirules-2.20.zip
[Symfony\Component\Debug\Exception\FatalThrowableError]
Class 'CRM_Civirules_Utils_Upgrader' not found