Fatal error: Uncaught Error: Class "Symfony\Component\Config\ConfigCache" not found in /home/.sites/380/site5002698/web/phpbb/di/container_builder.php:157
Stack trace:
#0 /home/.sites/380/site5002698/web/common.php(125): phpbb\di\container_builder->get_container()
#1 /home/.sites/380/site5002698/web/viewforum.php(20): include('/home/.sites/38...')
#2 {main}
  thrown in /home/.sites/380/site5002698/web/phpbb/di/container_builder.php on line 157