Flutter项目ios打包失败：unable to build chain to self-signed root for signer

把flutter项目在一台新电脑上跑了之后flutter run都没问题，就是一直build失败，提示：

sent 57958557 bytes  received 8292 bytes  23186739.60 bytes/sec
total size is 57922417  speedup is 1.00
building file list ... done
Flutter.framework/
Flutter.framework/Flutter
Flutter.framework/Info.plist
Flutter.framework/icudtl.dat
Flutter.framework/_CodeSignature/
Flutter.framework/_CodeSignature/CodeResources

sent 100284971 bytes  received 120 bytes  40114036.40 bytes/sec
total size is 100272318  speedup is 1.00
Warning: unable to build chain to self-signed root for signer "iPhone Distribution: XXX Co.,Ltd. (XXX)"
/Library/Developer/Xcode/DerivedData/Runner-cucooaalbudhwweueforwdylnldx/Build/Products/Debug-iphoneos/Runner.app/Frameworks/App.framework/App: errSecInternalComponent
Command PhaseScriptExecution failed with a nonzero exit code

每次build好久都是到最后一步失败很崩溃，困扰了好久，直到看到这个帖子： stackoverflow.com/questions/4…

尝试发现居然是证书设置的问题orz 这个方法对我来说是work的：

1- Open Keychain Access

2- Select login, and click Certificates

3- Double click Apple Worldwide Developer Relations Certificate Authority

4- Open trust section, and set to "Use System Defaults" from "Always Trust"

5- Clean build folder and run

主要是找到钥匙串下面所有的证书都检查一下，把始终信任都改成使用系统默认

重新build居然就成功了...只是每次都需要输入多次密码...但至少能打包了