Fatal error:  Uncaught Error: Class "phpbb\filesystem\filesystem" not found in /apache$root/htdocs/vamp/includes/functions.php:3314
Stack trace:
#0 /apache$root/htdocs/vamp/includes/functions.php(3073): phpbb_filter_root_path('/apache$root/ht...')
#1 /apache$root/htdocs/vamp/phpbb/class_loader.php(160): msg_handler(2, 'require(/apache...', '/apache$root/ht...', 160)
#2 /apache$root/htdocs/vamp/phpbb/class_loader.php(160): require('/apache$root/ht...')
#3 /apache$root/htdocs/vamp/cache/production/container_4335734bbdd20f586549a504dff5f80c.php(1309): phpbb\class_loader->load_class('\\phpbb\\cache\\dr...')
#4 /apache$root/htdocs/vamp/vendor/symfony/dependency-injection/Container.php(306): phpbb_cache_container->getCache_DriverService()
#5 /apache$root/htdocs/vamp/common.php(137): Symfony\Component\DependencyInjection\Container->get('cache.driver')
#6 /apache$root/htdocs/vamp/posting.php(20): include('/apache$root/ht...')
#7 {main}
  thrown in /apache$root/htdocs/vamp/includes/functions.php on line 3314