AWS HTTP error: cURL error 60: SSL certificate problem: unable to get local issuer certificate (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)
处理方法：
1.去这个网站https://curl.haxx.se/docs/caextract.html，下载证书
2.在php.ini的curl 部分引入证书的文件路径；
3.重启apache或nginx