Fatal error: Interface 'Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface' not found in C:\inetpub\vhosts\myfifthwheelrv.com\httpdocs\RV\Downloads\phpBB\phpBB3\vendor\symfony\proxy-manager-bridge\LazyProxy\PhpDumper\ProxyDumper.php on line 26