flutter Warning: CocoaPods is installed but broken. Skipping pod install. You appear to have Cocoa

flutter Warning: CocoaPods is installed but broken. Skipping pod install. You appear to have CocoaPods ins
确保你已经安装了 CocoaPods 并可以正常使用：

1.flutter clean 
2.flutter pub get
3.cd ios
4.pod install
5.退出vscode，并重新打开
6.再次运行项目

运行后如果提示以下错误：

[ERROR:flutter/shell/platform/darwin/graphics/FlutterDarwinContextMetalImpeller.mm(42)] Using the Impeller rendering backend.
[ERROR:flutter/shell/common/shell.cc(117)] Dart Error: Can't load Kernel binary: Invalid kernel binary format version.
[ERROR:flutter/runtime/dart_isolate.cc(144)] Could not prepare isolate.
[ERROR:flutter/runtime/runtime_controller.cc(462)] Could not create root isolate.
[ERROR:flutter/shell/common/shell.cc(669)] Could not launch engine with configuration.
Application finished.

1.删除 flutter sdk目录下 bin/目录下的cache文件夹
2.退出vscode，并重新打开
3.再次运行项目，会自动下载缓存文件，下载完成后就可以成功运行了。