The fix of obsolete \Twig_Environment class, replaced with Twig\Environment namespace.
This is tested on Symfony 4.4 LTS, composer.json got "twig/twig" require version same as in symfony.
The project with very old twig 1.* will not work with this fix.
The fix of obsolete \Twig_Environment class, replaced with Twig\Environment namespace. This is tested on Symfony 4.4 LTS, composer.json got "twig/twig" require version same as in symfony. The project with very old twig 1.* will not work with this fix.