Fatal error:  Uncaught Error: Failed opening required './phpbb/user_loader.php' (include_path='.:/php_root/000000') in /apache$root/htdocs/vamp/phpbb/class_loader.php:160
Stack trace:
#0 /apache$root/htdocs/vamp/cache/production/container_4335734bbdd20f586549a504dff5f80c.php(4617): phpbb\class_loader->load_class('\\phpbb\\user_loa...')
#1 /apache$root/htdocs/vamp/cache/production/container_4335734bbdd20f586549a504dff5f80c.php(3266): phpbb_cache_container->getUserLoaderService()
#2 /apache$root/htdocs/vamp/cache/production/container_4335734bbdd20f586549a504dff5f80c.php(3587): phpbb_cache_container->getNotificationManagerService()
#3 /apache$root/htdocs/vamp/vendor/symfony/dependency-injection/Container.php(306): phpbb_cache_container->getPhpbb_Autogroups_HelperService()
#4 /apache$root/htdocs/vamp/ext/phpbb/autogroups/conditions/type/base.php(71): Symfony\Component\DependencyInjection\Container->get('phpbb.autogroup...')
#5 /apache$root/htdocs/vamp/cache/production/container_4335734bbdd20f586549a504dff5f80c.php(3647): phpbb\autogroups\conditions\type\base->__construct(Object(phpbb_cache_container), Object(phpbb\db\driver\factory), Object(phpbb\language\language), 'phpbb_autogroup...', 'phpbb_autogroup...', './', 'php')
#6 /apache$root/htdocs/vamp/vendor/symfony/dependency-injection/Container.php(306): phpbb_cache_container->getPhpbb_Autogroups_Type_LastvisitService()
#7 /apache$root/htdocs/vamp/ext/phpbb/autogroups/conditions/manager.php(92): Symfony\Component\DependencyInjection\Container->get('phpbb.autogroup...')
#8 /apache$root/htdocs/vamp/ext/phpbb/autogroups/event/listener.php(161): phpbb\autogroups\conditions\manager->check_condition('phpbb.autogroup...', Array)
#9 /apache$root/htdocs/vamp/vendor/symfony/event-dispatcher/EventDispatcher.php(214): phpbb\autogroups\event\listener->last_visit_check(Object(phpbb\event\data), 'core.session_cr...', Object(phpbb\event\dispatcher))
#10 /apache$root/htdocs/vamp/vendor/symfony/event-dispatcher/EventDispatcher.php(44): Symfony\Component\EventDispatcher\EventDispatcher->doDispatch(Array, 'core.session_cr...', Object(phpbb\event\data))
#11 /apache$root/htdocs/vamp/phpbb/event/dispatcher.php(62): Symfony\Component\EventDispatcher\EventDispatcher->dispatch('core.session_cr...', Object(phpbb\event\data))
#12 /apache$root/htdocs/vamp/phpbb/event/dispatcher.php(46): phpbb\event\dispatcher->dispatch('core.session_cr...', Object(phpbb\event\data))
#13 /apache$root/htdocs/vamp/phpbb/session.php(851): phpbb\event\dispatcher->trigger_event('core.session_cr...', Array)
#14 /apache$root/htdocs/vamp/phpbb/session.php(478): phpbb\session->session_create()
#15 /apache$root/htdocs/vamp/posting.php(27): phpbb\session->session_begin()
#16 {main}
  thrown in /apache$root/htdocs/vamp/phpbb/class_loader.php on line 160