curl :: curl_fetch_memoryurl，handle = handle的错误没办法连接到R的服务器oauth2.0_token

> github_token <- oauth2.0_token(oauth_endpoints("github"), myapp)

Waiting for authentication in browser...
      Press Esc/Ctrl   C to abort
      Authentication complete.
Error in curl::curl_fetch_memory(url, handle = handle) : 
      Couldn't connect to server

我正在尝试从GitAPI获取数据。我需要使用此数据来查找创建回购的时间。我尝试安装 httpuv，但错误是相同的。

I am trying to get the data from GitAPI. I need to Use this data to find the time that the a repo was created. I have tried installing "httpuv" but the error is same.

PS。我在代理服务器后面。

PS. I am behind a proxy server.