客户端需要Elasticsearch运行时异常curl_multi_exec(）函数

我的队列工作者不断抛出以下错误：

[Elasticsearch'Common'Exceptions'RuntimeException]      
curl_multi_exec() function is required for the client.

laravel日志中的堆栈跟踪为：

[2015-11-02 01:52:35] local.ERROR: exception 'Elasticsearch'Common'Exceptions'RuntimeException' with message 'curl_multi_exec() function is required for the client.' in /opt/bitnami/frameworks/laravel/vendor/elasticsearch/elasticsearch/src/Elasticsearch/Client.php:89
Stack trace:
#0 /opt/bitnami/frameworks/laravel/app/Services/ElasticSearchClient.php(35): Elasticsearch'Client->__construct(Array)
#1 /opt/bitnami/frameworks/laravel/app/Providers/ElasticSearchServiceProvider.php(29): App'Services'ElasticSearchClient->__construct()
#2 [internal function]: App'Providers'ElasticSearchServiceProvider->boot()
#3 /opt/bitnami/frameworks/laravel/vendor/laravel/framework/src/Illuminate/Container/Container.php(503): call_user_func_array(Array, Array)
#4 /opt/bitnami/frameworks/laravel/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(734): Illuminate'Container'Container->call(Array)
#5 /opt/bitnami/frameworks/laravel/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(717): Illuminate'Foundation'Application->bootProvider(Object(App'Providers'ElasticSearchServiceProvider))
#6 [internal function]: Illuminate'Foundation'Application->Illuminate'Foundation'{closure}(Object(App'Providers'ElasticSearchServiceProvider), 19)
#7 /opt/bitnami/frameworks/laravel/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(718): array_walk(Array, Object(Closure))
#8 /opt/bitnami/frameworks/laravel/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/BootProviders.php(17): Illuminate'Foundation'Application->boot()
#9 /opt/bitnami/frameworks/laravel/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(203): Illuminate'Foundation'Bootstrap'BootProviders->bootstrap(Object(Illuminate'Foundation'Application))
#10 /opt/bitnami/frameworks/laravel/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(208): Illuminate'Foundation'Application->bootstrapWith(Array)
#11 /opt/bitnami/frameworks/laravel/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(105): Illuminate'Foundation'Console'Kernel->bootstrap()
#12 /opt/bitnami/frameworks/laravel/artisan(36): Illuminate'Foundation'Console'Kernel->handle(Object(Symfony'Component'Console'Input'ArgvInput), Object(Symfony'Component'Console'Output'ConsoleOutput))
#13 {main}

我不知道该怎么修。

我正在使用bitnami灯堆栈来运行laravel应用程序。

我也在使用https://www.elastic.co/guide/en/elasticsearch/client/php-api/current/index.html

在php.ini文件中，是否需要添加以下行？：

extension=php_curl.dll

还是我需要做一些额外的事情？