我的同事遇到了同样的问题，我偶然发现此在R-Blogger上的发布，作者是Andrew Collier。下面的解决方案可以解决您的问题，但是我不知道它是否还会导致其他安全问题。

My colleague had the same issue and I stumbled on this post on R-Bloggers by Andrew Collier. The solution below will fix your problem, but I don't know if it might cause other security issues.

library(httr)
set_config(config(ssl_verifypeer = 0L))

更新：这将禁用ssl验证。 https://github.com/r-lib/httr/issues/262

update: This will disable ssl verification. https://github.com/r-lib/httr/issues/262