composer install时，报如下错误,第一次提问，希望得到大牛解决

Question

1.comooser install时 报出如下错误
The "http://packagist.xesv5.com/packages.json" file could not be downloaded: php_network_getaddresses: getaddrinfo failed: Name or service not known
failed to open stream: php_network_getaddresses: getaddrinfo failed: Name or service not known

Answer 1

我主机添加一个host就行了，但是现在又出现如下问题了,