file_get_contents(): php_network_getaddresses: getaddrinfo failed: Name or service not known

#26: /www/wwwroot/xcx.yangzifu.com/controllers/admin/AdminController.php
#0: app\core\ErrorHandler->handleError()
#26: /www/wwwroot/xcx.yangzifu.com/controllers/admin/AdminController.php
#109: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/base/BaseObject.php
#86: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/base/Controller.php
#0: yii\base\Controller->__construct()
#376: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/di/Container.php
#156: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/di/Container.php
#345: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/BaseYii.php
#642: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/base/Module.php
#596: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/base/Module.php
#522: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/base/Module.php
#227: /www/wwwroot/xcx.yangzifu.com/core/Application.php
#103: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/web/Application.php
#386: /www/wwwroot/xcx.yangzifu.com/vendor/yiisoft/yii2/base/Application.php
#16: /www/wwwroot/xcx.yangzifu.com/web/index.php

Version: 4.2.37