Hello,
aujourd'hui j'essaie d'installer le service qui me permet d'avoir la fonction asset() dans twig, et je me fais rejeter violament

Je fais:

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composer require symfony/asset
et j'ai en sortie:

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Deprecation warning: require.symfony/templ  ating is invalid, it should have a v
endor name, a forward slash, and a package name. The vendor and package name can
 be words separated by -, . or _. The complete name should match "[a-z0-9]([_.-]
?[a-z0-9]+)*/[a-z0-9]([_.-]?[a-z0-9]+)*". Make sure you fix this as Composer 2.0
 will error.
Restricting packages listed in "symfony/symfony" to "4.2.*"
./composer.json has been updated
Deprecation warning: require.symfony/templ  ating is invalid, it should have a v
endor name, a forward slash, and a package name. The vendor and package name can
 be words separated by -, . or _. The complete name should match "[a-z0-9]([_.-]
?[a-z0-9]+)*/[a-z0-9]([_.-]?[a-z0-9]+)*". Make sure you fix this as Composer 2.0
 will error.
Loading composer repositories with package information
Updating dependencies (including require-dev)
Restricting packages listed in "symfony/symfony" to "4.2.*"
Your requirements could not be resolved to an installable set of packages.
 
  Problem 1
    - The requested package symfony/templ  ating could not be found, it looks li
ke its name is invalid, "  " is not allowed in package names.
 
Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your min
imum-stability setting
   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more det
ails.
 - It's a private package and you forgot to add a custom repository to find it
 
Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further commo
n problems.
 
Installation failed, reverting ./composer.json to its original content.
Est ce mon projet qui pose pb ou est ce que c'est le repository officiel du service asset() qui est cassé?