Fatal error: Uncaught Error: Call to undefined function Magento\Framework\Filesystem\Driver\is_dir() in /var/www/html/vendor/magento/framework/Filesystem/Driver/File.php:158 Stack trace: #0 /var/www/html/vendor/magento/framework/Filesystem/Directory/Write.php(96): Magento\Framework\Filesystem\Driver\File->isDirectory('/var/www/html/v...') #1 /var/www/html/vendor/magento/framework/App/Cache/Frontend/Factory.php(130): Magento\Framework\Filesystem\Directory\Write->create('page_cache') #2 /var/www/html/vendor/magento/framework/App/Cache/Frontend/Pool.php(69): Magento\Framework\App\Cache\Frontend\Factory->create(Array) #3 /var/www/html/vendor/magento/framework/App/Cache/Frontend/Pool.php(156): Magento\Framework\App\Cache\Frontend\Pool->_initialize() #4 /var/www/html/vendor/magento/framework/App/Cache/Type/FrontendPool.php(87): Magento\Framework\App\Cache\Frontend\Pool->get('default') #5 /var/www/html/vendor/magento/framework/App/Interception/Cache/CompiledConfig.php(29): Magento\Framework\App\Cache\Type\FrontendPool->get('compiled_config') #6 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Magento\Framework\App\Interception\Cache\CompiledConfig->__construct(Object(Magento\Framework\App\Cache\Type\FrontendPool)) #7 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array) #8 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #9 /var/www/html/vendor/magento/framework/App/ObjectManager/Environment/Compiled.php(117): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Framewo...') #10 /var/www/html/vendor/magento/framework/App/ObjectManagerFactory.php(191): Magento\Framework\App\ObjectManager\Environment\Compiled->configureObjectManager(Object(Magento\Framework\Interception\ObjectManager\Config\Compiled), Array) #11 /var/www/html/vendor/magento/framework/App/Bootstrap.php(212): Magento\Framework\App\ObjectManagerFactory->create(Array) #12 /var/www/html/vendor/magento/framework/App/Bootstrap.php(127): Magento\Framework\App\Bootstrap->__construct(Object(Magento\Framework\App\ObjectManagerFactory), '/var/www/html', Array) #13 /var/www/html/pub/index.php(27): Magento\Framework\App\Bootstrap::create('/var/www/html', Array) #14 {main} thrown in /var/www/html/vendor/magento/framework/Filesystem/Driver/File.php on line 158