Symfony\Component\ErrorHandler\Error\ClassNotFoundError #223 when symfony update on github project symfony

I'm currently working with my friend on a Symfony project. Everything was working great but one day after y pull the master branch and his work my project doesn't work anymore and display this error after i tried to composer update :

    composer update    Loading composer repositories with package information    Updating dependencies (including require-dev)    Restricting packages listed in "symfony/symfony" to "5.0.*"    Nothing to install or update    Package zendframework/zend-code is abandoned, you should avoid using it. Use laminas/laminas-code instead.    Package zendframework/zend-eventmanager is abandoned, you should avoid using it. Uselaminas/laminas-eventmanager instead.    Generating autoload files    ocramius/package-versions: Generating version class...    ocramius/package-versions: ...done generating version class    Executing script cache:clear [KO]     [KO]    Script cache:clear returned with error code 255    !!  Symfony\Component\ErrorHandler\Error\ClassNotFoundError {#223    !!    #message: """    !!      Attempted to load class "SessionPass" from namespace "Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler".\n    !!      Did you forget a "use" statement for another namespace?    !!      """    !!    #code: 0    !!    #file: "F:\CODE\almalusa\vendor\symfony\framework-bundle\FrameworkBundle.php"    !!    #line: 153    !!    trace: {    !!      F:\CODE\almalusa\vendor\symfony\framework-bundle\FrameworkBundle.php:153 { …}    !!      F:\CODE\almalusa\vendor\symfony\http-kernel\Kernel.php:639 { …}    !!      F:\CODE\almalusa\vendor\symfony\http-kernel\Kernel.php:611 { …}    !!      F:\CODE\almalusa\vendor\symfony\http-kernel\Kernel.php:517 { …}    !!      F:\CODE\almalusa\vendor\symfony\http-kernel\Kernel.php:126 { …}    !!      F:\CODE\almalusa\vendor\symfony\framework-bundle\Console\Application.php:169 { …}    !!      F:\CODE\almalusa\vendor\symfony\framework-bundle\Console\Application.php:75 { …}    !!      F:\CODE\almalusa\vendor\symfony\console\Application.php:140 { …}    !!      F:\CODE\almalusa\bin\console:42 {    !!        › $application = new Application($kernel);\r    !!        › $application->run($input);\r    !!        ›    !!        arguments: {    !!          $input: Symfony\Component\Console\Input\ArgvInput {#3 …}    !!        }    !!      }    !!    }    !!  }    !!    Script @auto-scripts was called via post-update-cmd

I already try to several things like adding :

new Knp\Bundle\PaginatorBundle\KnpPaginatorBundle();

Or hitting a :

composer dump-autoload

But for me it's not clear and I may miss something on all the topic I read about this error...

Thanks for your attention.