我正在尝试在heroku上部署symfony2应用程序并且我一直收到此错误：
-----> PHP app detected
-----> Resolved composer.lock requirement for PHP >=5.3.3 to version 5.6.2.
-----> Installing system packages...
- PHP 5.6.2
- Apache 2.4.10
- Nginx 1.6.0
-----> Installing PHP extensions...
- zend-opcache (automatic; bundled, using 'ext-zend-opcache.ini')
-----> Installing dependencies...
Composer version 1.0-dev (ffffab37a294f3383c812d0329623f0a4ba45387) 2014-11-05 06:04:18
Loading composer repositories with package information
Installing dependencies from lock file
Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. Run update to update them.
- Installing doctrine/lexer (v1.0)
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- Installing doctrine/annotations (v1.2.1)
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- Installing doctrine/cache (v1.3.1)
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- Installing doctrine/inflector (v1.0)
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- Installing doctrine/collections (v1.2)
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- Installing doctrine/common (v2.4.2)
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- Installing doctrine/data-fixtures (dev-master ac36ccc)
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- Installing twig/twig (v1.16.2)
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- Installing psr/log (1.0.0)
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- Installing symfony/symfony (v2.5.6)
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- Installing jdorn/sql-formatter (v1.2.17)
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- Installing doctrine/dbal (v2.4.3)
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- Installing doctrine/doctrine-bundle (v1.2.0)
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- Installing doctrine/doctrine-fixtures-bundle (dev-master 9a5b528)
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- Installing doctrine/orm (v2.4.6)
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- Installing incenteev/composer-parameter-handler (v2.1.0)
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- Installing knplabs/knp-components (1.3.1)
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- Installing knplabs/knp-paginator-bundle (2.4.1)
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- Installing knplabs/knp-snappy (0.2.1)
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- Installing knplabs/knp-snappy-bundle (dev-master 4e5a2cf)
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- Installing sensiolabs/security-checker (v2.0.0)
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- Installing sensio/distribution-bundle (v3.0.8)
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- Installing sensio/framework-extra-bundle (v3.0.2)
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- Installing kriswallsmith/assetic (v1.2.0)
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- Installing symfony/assetic-bundle (v2.5.0)
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- Installing monolog/monolog (1.11.0)
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- Installing symfony/monolog-bundle (v2.6.1)
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- Installing swiftmailer/swiftmailer (v5.3.0)
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- Installing symfony/swiftmailer-bundle (v2.3.7)
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- Installing twig/extensions (v1.2.0)
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Generating optimized autoload files
Creating the "app/config/parameters.yml" file
PHP Fatal error: Class 'Sensio\Bundle\GeneratorBundle\SensioGeneratorBundle' not found in /tmp/build_634a4dfca497b3cefc3e87e3c0f3c462/app/AppKernel.php on line 30
Script Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::clearCache handling the post-install-cmd event terminated with an exception
[RuntimeException的]
执行“'cache：clear --no-warmup'”命令时发生错误。
install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-plugins] [--no-custom -installers] [ - no-scripts] [ - no-progress] [-v | vv | vvv | --verbose] [-o | --optimize-autoloader] [--ignore-platform-reqs] [packages1 ] ... [packagesN]
！推送被拒绝，无法编译PHP应用程序enter code here
答案 0 :(得分：3)
Heroku在推送时运行composer install --no-dev，因此不会安装任何开发包。
这意味着sensio/generator-bundle必须列在require中，而不是require-dev，composer.json中composer update之后composer.lock再次生成AppKernel.php同时也提交两个）。
还要确保在if()中捆绑包在{{1}}块之外注册，该块仅在dev和test envs中运行。
答案 1 :(得分：2)
dev＆amp;之间存在混淆prod模式。 Composer以prod模式运行（例如--no-dev），但您的应用尝试以dev模式运行。
在Heroku中设置ENV var：
SYMFONY_ENV=prod