[phpBB Debug] PHP Warning: in file [ROOT]/vendor/composer/ClassLoader.php on line 269: include([ROOT]/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/LazyProxy/PhpDumper/NullDumper.php): failed to open stream: No such file or directory
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/composer/ClassLoader.php on line 269: include(): Failed opening '[ROOT]/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/LazyProxy/PhpDumper/NullDumper.php' for inclusion (include_path='.:/opt/php5.6/lib/php')

Fatal error: Class 'Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\NullDumper' not found in /home/clients/677a9d1211c4a8bde84fc55e6a4e57f4/web/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php on line 129