Can not update from b1 to b2 because of missing install/update/new/config/ folder

Fatal error: Uncaught exception 'InvalidArgumentException' with message 'The file "services.yml" does not exist (in: ).' in phpBB3\vendor\symfony\config\Symfony\Component\Config\FileLocator.php:72 Stack trace: #0 phpBB3\vendor\symfony\dependency-injection\Symfony\Component\DependencyInjection\Loader\YamlFileLoader.php(42): Symfony\Component\Config\FileLocator->locate('services.yml') #1 phpBB3\phpbb\di\extension\core.php(49): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->load('services.yml') #2 phpBB3\vendor\symfony\dependency-injection\Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationPass.php(50): phpbb\di\extension\core->load(Array, Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #3 phpBB3\vendor\symfony\dependency-injection\Symfony\Component\DependencyInjection\Compiler\Compiler.php(119): Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationPass->process(Object(Symf in phpBB3\vendor\symfony\config\Symfony\Component\Config\FileLocator.php on line 72