[FIXED] How to solve error 255 with Composer and Symfony

Issue

I have a problem with Composer, when I run the composer install command, an error 255 appears.

Here are the tasks I have done to solve this:

• I updated Composer and the error is present in version 1 and 2
• composer sync-recipes -v --force
• Reinstalled synfony 5
• Updated the PC

I am running Ubuntu 20.04.

Error detail:

Don't forget to run npm install --force or yarn install --force to refresh your JavaScript dependencies!
Run composer recipes at any time to see the status of your Symfony recipes.

Executing script cache:clear [KO]
 [KO]
Script cache:clear returned with error code 255
!!  PHP Fatal error:  Declaration of Symfony\Component\DependencyInjection\ServiceLocator::has(string $id) must be compatible with Psr\Container\ContainerInterface::has($id) in /home/massi/Projets/projet-RH/vendor/symfony/dependency-injection/ServiceLocator.php on line 46
!!  Symfony\Component\ErrorHandler\Error\FatalError {#92
!!    -error: array:4 [
!!      "type" => 64
!!      "message" => "Declaration of Symfony\Component\DependencyInjection\ServiceLocator::has(string $id) must be compatible with Psr\Container\ContainerInterface::has($id)"
!!      "file" => "/home/massi/Projets/projet-RH/vendor/symfony/dependency-injection/ServiceLocator.php"
!!      "line" => 46
!!    ]
!!    #message: "Compile Error: Declaration of Symfony\Component\DependencyInjection\ServiceLocator::has(string $id) must be compatible with Psr\Container\ContainerInterface::has($id)"
!!    #code: 0
!!    #file: "./vendor/symfony/dependency-injection/ServiceLocator.php"
!!    #line: 46
!!  }
!!  
Script @auto-scripts was called via post-install-cmd

Solution

it's a probleme to a package recently updated

composer require symfony/service-contracts:2.2.0

:)

Answered By - Machou

Answer Checked By - Clifford M. (PHPFixing Volunteer)