Symfony2 Shell.php error on production server - symfony

Question

I get the following error in app_dev.php on my production server:
ErrorException: Notice: Undefined variable: output in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Shell/Shell.php line 59
in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Shell/Shell.php
line 59
at ErrorHandler->handle('8', 'Undefined variable: output', '/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Shell/Shell.php',
'59', array('command' => 'find')) in
/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Shell/Shell.php
line 59
at Shell->testCommand('find') in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Adapter/AbstractFindAdapter.php
line 123
at AbstractFindAdapter->isSupported() in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Adapter/GnuFindAdapter.php
line 30
at GnuFindAdapter->isSupported() in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Finder.php
line 700
at Finder->searchInDirectory('/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Validator/Resources/translations')
in
/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Finder.php
line 628
at Finder->getIterator() in /www/acme/www/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
line 555
at FrameworkExtension->registerTranslatorConfiguration(array('fallback'
=> 'pl', 'enabled' => true), object(ContainerBuilder)) in /www/acme/www/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
line 106
at FrameworkExtension->load(array(array('translator' => array('fallback' => 'pl'), 'secret' =>
'eea6ad638afadb62cd7bc360e98f7d3b', 'router' => array('resource' =>
'/www/acme/www/app/config/routing.yml', 'strict_requirements' =>
true), 'form' => true, 'csrf_protection' => true, 'validation' =>
array('enable_annotations' => true), 'templating' => array('engines'
=> array('twig')), 'trust_proxy_headers' => false, 'default_locale' => 'pl', 'session' => null), array('router' => array('resource' =>
'/www/acme/www/app/config/routing_dev.yml'), 'profiler' =>
array('only_exceptions' => false))), object(ContainerBuilder)) in
/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php
line 42
at MergeExtensionConfigurationPass->process(object(ContainerBuilder)) in
/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/DependencyInjection/MergeExtensionConfigurationPass.php
line 39
at MergeExtensionConfigurationPass->process(object(ContainerBuilder)) in
/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
line 119
at Compiler->compile(object(ContainerBuilder)) in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
line 494
at ContainerBuilder->compile() in /www/acme/www/app/bootstrap.php.cache line 950
at Kernel->buildContainer() in /www/acme/www/app/bootstrap.php.cache line 859
at Kernel->initializeContainer() in /www/acme/www/app/bootstrap.php.cache line 571
at Kernel->boot() in /www/acme/www/app/bootstrap.php.cache line 614
at Kernel->handle(object(Request)) in /www/acme/www/web/app_dev.php line 29
Everything works fine on my localhost so it can be something wrong with the server configuration.

Answer 1

Hosting provider has turned PHP exec function off because of the security reasons.
That's why above error occurred.
Does anyone know if its possible to bypass exec function in Symfony2 - I mean if it's possible to run symfony2 on the server with exec function turned off?

Answer 2

I've got the same problem with my hosting, with php safe_mode off. Actually there is a todo, but I dont know when they will fix it.
// todo: find a better way (command could not be available)
exec('command -v '.$command, $output, $code);
as seen in Symfony\Component\Finder\Shell\Shell;