How to catch exceptions in bulk request sending？

[Coding-Yuan]

What steps will reproduce the problem?

In bulk request sending, when a request fails, the response cannot be obtained. When one request fails, how do other requests return correctly？

use yii\httpclient\Client;

$client = new Client();

$requests = [
    $client->get('http://domain.com/keep-alive'),
    $client->post('http://domain.com/notify', ['userId' => 12]),
];
$responses = $client->batchSend($requests);

What's expected?

In batch requests, not only some requests fail, but also other requests return correctly

What do you get instead?

If there is a request timeout in batch request sending, an exception is responded

Additional info

Q	A
Yii version	2.0.35
Yii HTTP Client version	^2.0
PHP version	7.1.31
Operating system	CentOS7.6