/usr/share/php/GuzzleHttp/ is in php-guzzlehttp 6.1.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/GuzzleHttp/Client.php
/usr/share/php/GuzzleHttp/ClientInterface.php
/usr/share/php/GuzzleHttp/Cookie/
/usr/share/php/GuzzleHttp/Cookie/CookieJar.php
/usr/share/php/GuzzleHttp/Cookie/CookieJarInterface.php
/usr/share/php/GuzzleHttp/Cookie/FileCookieJar.php
/usr/share/php/GuzzleHttp/Cookie/SessionCookieJar.php
/usr/share/php/GuzzleHttp/Cookie/SetCookie.php
/usr/share/php/GuzzleHttp/Exception/
/usr/share/php/GuzzleHttp/Exception/BadResponseException.php
/usr/share/php/GuzzleHttp/Exception/ClientException.php
/usr/share/php/GuzzleHttp/Exception/ConnectException.php
/usr/share/php/GuzzleHttp/Exception/GuzzleException.php
/usr/share/php/GuzzleHttp/Exception/RequestException.php
/usr/share/php/GuzzleHttp/Exception/SeekException.php
/usr/share/php/GuzzleHttp/Exception/ServerException.php
/usr/share/php/GuzzleHttp/Exception/TooManyRedirectsException.php
/usr/share/php/GuzzleHttp/Exception/TransferException.php
/usr/share/php/GuzzleHttp/Handler/
/usr/share/php/GuzzleHttp/Handler/CurlFactory.php
/usr/share/php/GuzzleHttp/Handler/CurlFactoryInterface.php
/usr/share/php/GuzzleHttp/Handler/CurlHandler.php
/usr/share/php/GuzzleHttp/Handler/CurlMultiHandler.php
/usr/share/php/GuzzleHttp/Handler/EasyHandle.php
/usr/share/php/GuzzleHttp/Handler/MockHandler.php
/usr/share/php/GuzzleHttp/Handler/Proxy.php
/usr/share/php/GuzzleHttp/Handler/StreamHandler.php
/usr/share/php/GuzzleHttp/HandlerStack.php
/usr/share/php/GuzzleHttp/MessageFormatter.php
/usr/share/php/GuzzleHttp/Middleware.php
/usr/share/php/GuzzleHttp/Pool.php
/usr/share/php/GuzzleHttp/PrepareBodyMiddleware.php
/usr/share/php/GuzzleHttp/RedirectMiddleware.php
/usr/share/php/GuzzleHttp/RequestOptions.php
/usr/share/php/GuzzleHttp/RetryMiddleware.php
/usr/share/php/GuzzleHttp/TransferStats.php
/usr/share/php/GuzzleHttp/UriTemplate.php
/usr/share/php/GuzzleHttp/autoload.php
/usr/share/php/GuzzleHttp/functions.php
/usr/share/php/GuzzleHttp/functions_include.php