bug: symfony-proxy-manager-bridge and php 8.1

[gimler]

I get a error when i try to update my existing project symfony 5.4.4 with php8 to php 8.1.

Call to a member function __invoke() on null

i also found this issue https://github.com/symfony/symfony/issues/45626

but i did not get it to work ;(

only by removing package symfony-proxy-manager-bridge