Fatal error: Uncaught Symfony\Component\Filesystem\Exception\IOException: Unable to write to the "/var/www/app/var/cache/prod" directory. in /var/www/app/vendor/symfony/symfony/src/Symfony/Component/Filesystem/Filesystem.php:673 Stack trace: #0 /var/www/app/vendor/symfony/symfony/src/Symfony/Component/Config/ResourceCheckerConfigCache.php(138): Symfony\Component\Filesystem\Filesystem->dumpFile('/var/www/app/va...', '<?php\n\nuse Symf...', NULL) #1 /var/www/app/vendor/symfony/symfony/src/Symfony/Component/Routing/Router.php(305): Symfony\Component\Config\ResourceCheckerConfigCache->write('<?php\n\nuse Symf...', Array) #2 [internal function]: Symfony\Component\Routing\Router->Symfony\Component\Routing\{closure}(Object(Symfony\Component\Config\ResourceCheckerConfigCache)) #3 /var/www/app/vendor/symfony/symfony/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php(46): call_user_func(Object(Closure), Object(Symfony\Component\Config\ResourceCheckerConfigCache)) #4 /var/www/app/vendor/symfony/symfony/src/Symfony/Co in /var/www/app/vendor/jms/metadata/src/Metadata/Cache/FileCache.php on line 17