fatal: unable to access 'https://chromium.googlesource.com/webm/libwebp/': Failed to connect to chromium.googlesource.com port 443: Operation timed out

flutter ios 报错

[!] Error installing libwebp
[!] /usr/bin/git clone https://chromium.googlesource.com/webm/libwebp /var/folders/87/73_f42316tj173wq0y6njkhc0000gn/T/d20201205-22146-13q952b --template= --single-branch --depth 1 --branch v1.1.0

Cloning into '/var/folders/87/73_f42316tj173wq0y6njkhc0000gn/T/d20201205-22146-13q952b'...
fatal: unable to access 'https://chromium.googlesource.com/webm/libwebp/': Failed to connect to chromium.googlesource.com port 443: Operation timed out

解决方法：

　　1.Finder -> 前往文件夹 (⇧⌘G) -> ~/.cocoapods/repos/master/Specs/1/9/2/libwebp

　　

　　2.修改2处地方

　　

　　

将source中的git 改为 https://github.com/webmproject/libwebp.git

将homepage改为https://github.com/webmproject/,source->git 改为https://github.com/webmproject/libwebp.git

最后再进入ios文件，pod install 

参考：https://juejin.cn/post/6844904089189351438