With Symfony 6.x APP_DEBUG=true, the debug component does a false positive error

[pounard]

Error: During inheritance of MakinaCorpus\QueryBuilder\Query\Where\WhereWhere, while autoloading MakinaCorpus\QueryBuilder\Query\Where\WhereWhereNested: Uncaught ReflectionException: Class "MakinaCorpus\QueryBuilder\Query\Where\WhereWhere" does not exist in /code/app/vendor/symfony/error-handler/DebugClassLoader.php:324

So, in fact the code does exists, and PHP does know how to load it, but the debug component of Symfony does not.

• Test with Symfony 7.x to ensure it's fixed, if not open a bug there if none exist. This would need reproducing the error.
• In all cases, document that using APP_DEBUG=0 is mandatory with bugguy Symfony versions.