我收到以下錯誤GuzzleHttp\Exception\RequestException: cURL error 60: SSL certificate problem: unable to get local issuer certificate (see http://curl.haxx.se/libcurl/c/libcurl-errors.html) in C:\Users\Administrator\Documents\app\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php:186Stack trace:#0 C:\Users\Administrator\Documents\app\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php(149): GuzzleHttp\Handler\CurlFactory::createRejection(Object(GuzzleHttp\Handler\EasyHandle), Array)#1 C:\Users\Administrator\Documents\app\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php(102): GuzzleHttp\Handler\CurlFactory::finishError(Object(GuzzleHttp\Handler\CurlHandler), Object(GuzzleHttp\Handler\EasyHandle), Object(GuzzleHttp\Handler\CurlFactory))#2 C:\Users\Administrator\Documents\app\vendor\guzzlehttp\guzzle\src\Handler\CurlHandler.php(43): GuzzleHttp\Handler\CurlFactory::finish(Object(GuzzleHttp\Handler\CurlHandler), Object(GuzzleHttp\Handler\EasyHandle), Object(GuzzleHttp\Handler\CurlFactory))#3 C:\Users\Administrator\Documents\app\vendor\guzzlehttp\guzzle\src\Handler\Proxy.php(28): GuzzleHttp\Handler\CurlHandler->__invoke(Object(GuzzleHttp\Psr7\Request), Array)#4 C:\Users\Administrator\Documents\app\vendor\guzzlehttp\guzzle\src\Handler\Proxy.php(51): GuzzleHttp\Handler\Proxy::GuzzleHttp\Handler\{closure}(Object(GuzzleHttp\Psr7\Request), Array)運行代碼時：$client = new GuzzleHttp\Client();            $res = $client->request("GET", "http://www.google.com", ["timeout" => 60, "proxy" => $proxy]);            $code = $res->getStatusCode();            $is_connected = true;我該如何解決這個問題？