在iOS上运行ionic 3时出错

我在 Windows操作系统( Windows 8)上开发了一个离子3应用程序,为 Android构建应用程序,一切正常.
然后我需要为iOS构建,所以我将项目复制到MACBook以构建IOs.

我跑了最近的npm,但是当我跑的时候

ionic Cordova emulate ios --target="iPhone-X"

它加载模拟器,但然后显示以下@L_262_5@

An error was encountered processing the command     (domain=NSPOSIXErrorDomain,code=2):
 Failed to install the requested application
 An application bundle was not found at the provided path.
 Provide a valid path to the desired application bundle.
 logPath:          /Users/lekan/desktop/testProject/platforms/ios/cordova/console.log

我做错了什么

以下是我的离子信息
    离子信息

结果

cli packages: (/usr/local/lib/node_modules)

@ionic/cli-utils  : 1.15.2
ionic (Ionic CLI) : 3.15.2

global packages:

cordova (Cordova CLI) : 7.1.0 

local packages:

@ionic/app-scripts : 3.0.0
Cordova Platforms  : android 6.2.3 browser 4.1.0 ios 4.5.2
Ionic Framework    : ionic-angular 3.7.1

System:

Node  : v6.11.4
npm   : 3.10.10 
OS    : macOS Sierra
Xcode : Xcode 9.0.1 Build version 9A1004 

Environment Variables:

ANDROID_HOME : not set

Misc:

BACkend : pro