I am currently on Symfony2 2.3.7.
When I run the composer update command. In the post-update-cmd a script is run to update symfony2. But it fails:

Script SensioBundleDistributionBundleComposerScriptHandler::buildBootstrap handling the post-update-cmd event terminated with an exception



  [RuntimeException]                                     

  An error occurred when generating the bootstrap file.  



update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock] [--no-plugins] [--no-custom-installers] [--no-scripts] [--no-progress] [--with-dependencies] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [packages1] ... [packagesN]

Any idea why this is happening?
I tried to run:

composer update --no-scripts 

.. and that runs fine. The following is also working fine:

php vendor/sensio/distribution-bundle/Sensio/Bundle/DistributionBundle/Resources/bin/build_bootstrap.php

But everytime I try the normal composer update the post script fails.
Running the update with --verbose gives the following:

Script SensioBundleDistributionBundleComposerScriptHandler::buildBootstrap handling the post-update-cmd event terminated with an exception



  [RuntimeException]                                     

  An error occurred when generating the bootstrap file.                                                      



Exception trace:

 () at C:xampphtdocsforvaltningvendorsensiodistribution-bundleSensioBundleDistributionBundleComposerScriptHandler.php:203

 SensioBundleDistributionBundleComposerScriptHandler::executeBuildBootstrap() at C:xampphtdocsforvaltningvendorsensiodistribution-bundleSensioBundleDistributionBundleComposerScriptHandler.php:43

 SensioBundleDistributionBundleComposerScriptHandler::buildBootstrap() at phar://C:/ProgramData/Composer/bin/composer.phar/src/Composer/EventDispatcher/EventDispatcher.php:165

 ComposerEventDispatcherEventDispatcher->executeEventPhpScript() at phar://C:/ProgramData/Composer/bin/composer.phar/src/Composer/EventDispatcher/EventDispatcher.php:138

 ComposerEventDispatcherEventDispatcher->doDispatch() at phar://C:/ProgramData/Composer/bin/composer.phar/src/Composer/EventDispatcher/EventDispatcher.php:107

 ComposerEventDispatcherEventDispatcher->dispatchCommandEvent() at phar://C:/ProgramData/Composer/bin/composer.phar/src/Composer/Installer.php:289

 ComposerInstaller->run() at phar://C:/ProgramData/Composer/bin/composer.phar/src/Composer/Command/UpdateCommand.php:118

 ComposerCommandUpdateCommand->execute() at phar://C:/ProgramData/Composer/bin/composer.phar/vendor/symfony/console/Symfony/Component/Console/Command/Command.php:244

 SymfonyComponentConsoleCommandCommand->run() at phar://C:/ProgramData/Composer/bin/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:897

 SymfonyComponentConsoleApplication->doRunCommand() at phar://C:/ProgramData/Composer/bin/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:191

 SymfonyComponentConsoleApplication->doRun() at phar://C:/ProgramData/Composer/bin/composer.phar/src/Composer/Console/Application.php:117

 ComposerConsoleApplication->doRun() at phar://C:/ProgramData/Composer/bin/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:121

 SymfonyComponentConsoleApplication->run() at phar://C:/ProgramData/Composer/bin/composer.phar/src/Composer/Console/Application.php:83

 ComposerConsoleApplication->run() at phar://C:/ProgramData/Composer/bin/composer.phar/bin/composer:43

 require() at C:ProgramDataComposerbincomposer.phar:15



update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock] [--no-plugins] [--no-custom-installers] [--no-scripts] [--no-progress] [--with-dependencies] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [packages1] ... [packagesN]

The composer.json contains:

{

"name": "symfony/framework-standard-edition",

"license": "MIT",

"type": "project",

"description": "The "Symfony Standard Edition" distribution",

"autoload": {

    "psr-0": { "": "src/" }

},

"repositories": [

    {

        "type": "package",

        "package": {

            "name": "jquery/jquery",

            "version": "1.9.1",

            "dist": {

                "url": "http://code.jquery.com/jquery-1.9.1.js",

                "type": "file"

            }

        }

    }

],

"require": {

    "php": ">=5.3.3",

    "symfony/symfony": "2.3.*",

    "twig/extensions": "1.0.*",

    "symfony/assetic-bundle": "2.3.*",

    "symfony/swiftmailer-bundle": "2.3.*",

    "symfony/monolog-bundle": "2.3.*",

    "sensio/distribution-bundle": "2.3.*",

    "sensio/framework-extra-bundle": "2.3.*",

    "sensio/generator-bundle": "2.3.*",

    "knplabs/knp-menu": "2.0.*@dev",

    "leafo/lessphp": "0.4.*@dev",

    "knplabs/knp-menu-bundle": "2.0.*@dev",

    "incenteev/composer-parameter-handler": "~2.0",

    "twbs/bootstrap": "2.3.*",

    "jquery/jquery": "1.9.*",

    "FortAwesome/Font-Awesome": "3.2.1",

    "egeloen/ckeditor-bundle": "2.*"

},

"require-dev": {

    "phpunit/phpunit": "3.7.*"

},

"scripts": {

    "post-install-cmd": [

        "Incenteev\ParameterHandler\ScriptHandler::buildParameters",

        "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::buildBootstrap",

        "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::clearCache",

        "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::installAssets",

        "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::installRequirementsFile"

    ],

    "post-update-cmd": [

        "Incenteev\ParameterHandler\ScriptHandler::buildParameters",

        "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::buildBootstrap",

        "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::clearCache",

        "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::installAssets",

        "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::installRequirementsFile"

    ]

},

"config": {

    "bin-dir": "bin"

},

"minimum-stability": "stable",

"extra": {

    "symfony-app-dir": "app",

    "symfony-web-dir": "web",

    "incenteev-parameters": {

        "file": "app/config/parameters.yml"

    },

    "branch-alias": {

        "dev-master": "2.3-dev"

    }

}

}

How to solve install/update Symfony 2 issues

One important Symfony requirement is that the app/cache and app/logs directories must be writable both by the web server and the command line user.

On Linux and macOS systems, if your web server user is different from your command line user, you need to configure permissions properly to avoid issues. There are several ways to achieve that:

The most common solution :

In a terminal execute following commands :

rm -rf bin

rm -rf vendor

composer install

# or if your didn't install composer

php composer.phar install

It should work now! For more informations see Symfony installation.

If you still have this error : «An error occurred when generating the bootstrap file»

It means that you have file permission issue.
See below procedure for solve the problem ↓

Setting up or Fixing File Permissions :

In a terminal execute following commands :

rm -rf app/cache/*

rm -rf app/logs/*

On macOS systems, the chmod command supports the +a flag to define an ACL. Use the following script to determine your web server user and grant the needed permissions:

HTTPDUSER=$(ps axo user,comm | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d  -f1)

sudo chmod +a "$HTTPDUSER allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs

sudo chmod +a "$(whoami) allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs

On most Linux and BSD distributions don't support chmod +a, but do support another utility called setfacl. You may need to install setfacl and enable ACL support on your disk partition before using it. Then, use the following script to determine your web server user and grant the needed permissions:

HTTPDUSER=$(ps axo user,comm | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d  -f1)

# if this doesn't work, try adding `-n` option

sudo setfacl -dR -m u:"$HTTPDUSER":rwX -m u:$(whoami):rwX app/cache app/logs

sudo setfacl -R -m u:"$HTTPDUSER":rwX -m u:$(whoami):rwX app/cache app/logs

If none of the previous methods work for you

Change the umask so that the cache and log directories are group-writable or world-writable (depending if the web server user and the command line user are in the same group or not). To achieve this, put the following line at the beginning of the app/console, web/app.php and web/app_dev.php files:

umask(0002); // This will let the permissions be 0775

// or

umask(0000); // This will let the permissions be 0777

Note : Changing the umask is not thread-safe, so the ACL methods are recommended when they are available.

For more information see official documentation : Symfony file permissions

I think remove the folder bundles in the web directory "web/bundles" before running the update. This should solve the assets install problems in post-update-cmd

I had the same problem and solved it in two parts. The crux of the problem was bad code on my part that wouldn't specifically apply to someone else, but my method for uncovering the issue might be useful to someone else.

First, I created a temporary file: app/test.php

use DoctrineCommonAnnotationsAnnotationRegistry;

use ComposerAutoloadClassLoader;



error_reporting(E_ALL | E_STRICT);

ini_set('display_errors', 1);



/**

 * @var ClassLoader $loader

 */

$loader = require __DIR__.'/../vendor/autoload.php';

You'll notice that is a slimmed down version of app/autoload.php

Next in my shell, I simply ran:

php app/test.php

After some trial and error, I discovered that I had an error in a private repo that I had as a requirement in my composer.json file. In my case, and I had a bootstrap file that was calling the very bootstrap.cache.php that we're trying to get composer to create.

Anyway, this method was useful because it output errors that composer install/update would not, even with "--verbose" enabled and temporarily modifying the code to output all errors.

Try to clean the cache with

php app/console cache:clear

and then try again

composer update