解决pub finished with exit code 69

Authorization received, processing...
It looks like accounts.google.com is having some trouble.
Pub will wait for a while before trying to connect again.
OS Error: Operation timed out, errno = 60, address = accounts.google.com, port = 54374
pub finished with exit code 69

注意 番羽 墙

//我这里是SS，不同的工具可能不一样。
set http_proxy=http://127.0.0.1:1080
set https_proxy=https://127.0.0.1:1080