冰冻三尺，非一日之寒

参考链接： https://www.jianshu.com/p/f395eda2a388 解决办法： 在podfile文件中添加source源： source 'https://github.com/CocoaPods/Specs.git' 删除cdn源：（CocoaPods到1.8.4，国内cdn源用不了） #source 'https://cdn.cocoapods.org/ ' pod install和pod update可以正常操作， 如果pod search有些库不正常，可以执行： pod repo remove trunk 移除trunk源，执行完后，pod search就正常了！

原文链接 I have found the solution, myself. It is a  Catalina  issue: Go to  System Preferences  =>  Security & Privacy  =>  Full Disk Access Select an app and go to the root folder of the disk and press Cmd + Shift + .(dot) Go to /usr/sbin/ and select  httpd . That worked for me.