Fatal error: Uncaught Magento\Framework\Exception\FileSystemException: Directory "/mnt/www/html/var" cannot be created Warning!mkdir(): Permission denied in /mnt/www/html/vendor/magento/framework/Filesystem/Driver/File.php:236 Stack trace: #0 /mnt/www/html/vendor/magento/framework/Filesystem/Driver/File.php(229): Magento\Framework\Filesystem\Driver\File->mkdirRecursive() #1 /mnt/www/html/vendor/magento/framework/Filesystem/Driver/File.php(210): Magento\Framework\Filesystem\Driver\File->mkdirRecursive() #2 /mnt/www/html/vendor/magento/framework/Filesystem/Directory/Write.php(94): Magento\Framework\Filesystem\Driver\File->createDirectory() #3 /mnt/www/html/vendor/magento/framework/App/Cache/Frontend/Factory.php(116): Magento\Framework\Filesystem\Directory\Write->create() #4 /mnt/www/html/vendor/magento/framework/App/Cache/Frontend/Pool.php(69): Magento\Framework\App\Cache\Frontend\Factory->create() #5 /mnt/www/html/vendor/magento/framework/App/Cache/Frontend/Pool.php(151): Magento\Framework\App\Cache\Frontend\Pool->_initial in /mnt/www/html/vendor/magento/framework/Filesystem/Driver/File.php on line 236