Fatal error: Uncaught PhpAmqpLib\Exception\AMQPConnectionClosedException: Broken pipe or closed connection

[Funny-dot]

why?
my service is localhost;

my codes:

use PhpAmqpLib\Message\AMQPMessage;

include_once './vendor/autoload.php';


//创建连接和channel
$connection = new AMQPStreamConnection('127.0.0.1', 5672, 'admin', 'admin','/',false,
    'PLAIN','','en_US',3,3,null,true,15,3);
$channel = $connection->channel();

$channel->queue_declare('hello', false, false, false, false);

$msg = new AMQPMessage('Hello World!');
$channel->basic_publish($msg, '', 'hello');

echo " [x] Sent 'Hello World!'\n";
$channel->close();
$connection->close();```