`Class "Doctrine\Bundle\FixturesBundle\Fixture" not found in prod env

[vince83110]

Bug Report

Q	A
Version	Symfony 8.1
Previous Version if the bug is a regression	Symfony 8.0

Summary

Since Symfony 8.1 upgrade, I have the issue :

Class "Doctrine\Bundle\FixturesBundle\Fixture" not found.

in prod environment when I clear the cache.

Current behavior

Even if I totally clear the cache :

rm -rf var/cache/
bin/console c:c

 // Clearing the cache for the prod environment with debug false                                                        

In FileClassLocator.php line 64:
                                                             
  Class "Doctrine\Bundle\FixturesBundle\Fixture" not found.  
                                                             
cache:clear [--no-warmup] [--no-optional-warmers]

Expected behavior

I use only the classical way of using Fixtures and default folders without any specific config.

Before making a reproductible example, I would like to know if other people are touched ?

[greg0ire]

Please provide a stack trace