Call to undefined method GuzzleHttp\\Utils::chooseHandler() error is thrown when the PHP SDK is running?php composer.phar install command to install the SDK and the dependencies.composer install command to install the SDK and the dependencies. For more information, please see PHP SDK - Download and Installation.cURL error 60: See http://curl.haxx.se/libcurl/c/libcurl-errors.html error is reported when I use the PHP SDK to upload files?cURL error 60: See http://curl.haxx.se/libcurl/c/libcurl-errors.html will be reported. You can solve the problem as follows:cacert.pem certificate file at https://curl.haxx.se/ca/cacert.pem and save it to the PHP installation path.php.ini file, delete the semicolon (;) before the curl.cainfo configuration item, and set its value to the absolute path of the cacert.pem certificate file.Feedback