问题描述:模拟器可以运行，切换成真机，点击运行就报错(如上错误)

解决方法: 删除DerivedData下的全部文件即可,然后重新运行!

安装xcode时报错An unknown error occur
提示" An unknown error occurred. See the [install log] for ...
【IOS】appium+python跑自动化的时候，定位到了输入
``` An unknown server-side error occurred while processin...
An unknown error occurred.
An unknown error occurred. Warning：Multiple build command...
真机运行报错An unknown error occurred
1.真机运行报错An unknown error occurred.
Error getting device API level.
报错： An unknown server-side error occurred while processin...
如果你也遇到 "An unknown error ha
An unknown error has occurred.On Create your Apple ID 如果你...
An unknown error occurred
问题描述:模拟器可以运行，切换成真机，点击运行就报错(如上错误) 解决方法: 删除DerivedData下的全部文...
iOS随笔小记--程序崩溃
1. 如果仅仅提示“An unknown error occurred.”而没有其他任何废话（Se* th* in...
an unknown error has occurred
解决办法：将iPhone上已有的版本删除，clean xcode然后重装。
icloud An unknown error occurred
到这个目录下在 finder 里面 cmd + shift+G 输入地址。找到一个类似如下名字的文件夹删除，重...