执行pod install 报错 [!] CDN: trunk Repo update failed - 25 error(s):

控制台报错

[!] CDN: trunk Repo update failed - 25 error(s):
CDN: trunk URL couldn't be downloaded: https://raw.githubusercontent.com/CocoaPods/Specs/master/Specs/8/f/f/AMapFoundation/1.0.0/AMapFoundation.podspec.json, error: execution expired
CDN: trunk URL couldn't be downloaded: https://raw.githubusercontent.com/CocoaPods/Specs/master/Specs/8/f/f/AMapFoundation/1.1.0/AMapFoundation.podspec.json, error: execution expired
CDN: trunk URL couldn't be downloaded: https://raw.githubusercontent.com/CocoaPods/Specs/master/Specs/8/f/f/AMapFoundation/1.2.0/AMapFoundation.podspec.json, error: execution expired

在网上查阅了各种信息后 尝试换了两次source

source ‘https://github.com/CocoaPods/Specs.git’
source ‘https://cdn.cocoapods.org/’

但是报的错还是默认的url连接不上

解决方案：
先执行以下命令把trunk源删掉
pod repo remove trunk
再pod install