Closed
Description
I was referred here by the symfony/symfony project. They're saying the upgrading docs are defective because it never instructs developers to clear both caches between major upgrades.
symfony/symfony#53566 (comment)
https://symfony.com/doc/current/setup/upgrade_major.html
The result is dev machines may have a broken code environment after 2 or more major upgrades and it becomes impossible to use the cache:clear
command.