Hi On PHP 7 I'm getting the following error: `Memcached::setMulti(): failed to set key` ``` php $memcached = new Memcached('mcrouter_pool'); $memcached->addServers([['127.0.0.1', 11211]]); $memcached->setMulti(['foo' => 'bar'], 500); ``` However on PHP 5 I get no error. Has the behavior changed that it raises an E_WARNING in PHP 7? Is this a known issue? Thanks