[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/di/container_builder.php on line 292: file_put_contents(./cache/container_dotslash.php): failed to open stream: No such file or directory

Fatal error: Uncaught exception 'ReflectionException' with message 'Class phpbb\cache\driver\file does not exist' in /var/www/clients/client16/web226/web/forum/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/ContainerBuilder.php:957 Stack trace: #0 /var/www/clients/client16/web226/web/forum/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/ContainerBuilder.php(957): ReflectionClass->__construct('phpbb\\cache\\dri...') #1 /var/www/clients/client16/web226/web/forum/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/ContainerBuilder.php(490): Symfony\Component\DependencyInjection\ContainerBuilder->createService(Object(Symfony\Component\DependencyInjection\Definition), 'cache.driver') #2 /var/www/clients/client16/web226/web/forum/common.php(100): Symfony\Component\DependencyInjection\ContainerBuilder->get('cache.driver') #3 /var/www/clients/client16/web226/web/forum/index.php(23): include('/var/www/client...') #4 {main} thrown in /var/www/clients/client16/web226/web/forum/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/ContainerBuilder.php on line 957