[Symfony 7.1] The Symfony\Component\HttpKernel\DependencyInjection\Extension class is considered internal since Symfony 7.1, to be deprecated in 8.1; use Symfony\Component\DependencyInjection\Extension\Extension instead

[ruudk]

The "Symfony\Component\HttpKernel\DependencyInjection\Extension" class is considered internal since Symfony 7.1, to be deprecated in 8.1; use Symfony\Component\DependencyInjection\Extension\Extension instead. It may change without further notice. You should not use it from "Http\HttplugBundle\DependencyInjection\HttplugExtension".

[dbu]

thanks for reporting