You have requested a non-existent service "twig" ERROR

Question

I have a problem in installing Twig in my project.

when i run composer require twig , the error appeared In ContainerBuilder.php line 1024: You have requested a non-existent service "twig". I tried it in my other projects and it works but in this specific project it doesn't. Im new in Symfony that's is why i see this so technical.

Answer 1

You should use double quotes, here try this instead composer require "twig/twig:^2.0"

Answer 2

It seems like Flex recipe isn't always working flawlessly.
Doing composer require twig adds only the following line to config/bundles.php :

Twig\Extra\TwigExtraBundle\TwigExtraBundle::class => ['all' => true],

You should add another line next to it:

Symfony\Bundle\TwigBundle\TwigBundle::class => ['all' => true],