[phpBB Debug] PHP Warning: in file [ROOT]/vendor/composer/ClassLoader.php on line 571: include([ROOT]/vendor/symfony/config/ConfigCache.php): failed to open stream: Too many open files in system
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/composer/ClassLoader.php on line 571: include(): Failed opening '[ROOT]/vendor/composer/../symfony/config/ConfigCache.php' for inclusion (include_path='.:/usr/local/php7.4/lib/php')

Fatal error: Uncaught Error: Class 'Symfony\Component\Config\ConfigCache' not found in /home/tavernep/www/forum/phpbb/di/container_builder.php:157 Stack trace: #0 /home/tavernep/www/forum/common.php(125): phpbb\di\container_builder->get_container() #1 /home/tavernep/www/forum/viewtopic.php(20): include('/home/tavernep/...') #2 {main} thrown in /home/tavernep/www/forum/phpbb/di/container_builder.php on line 157