Sencha CMD 4无法为iOS打包

当我尝试将sencha touch应用程序打包为

sencha app package build iosPack.json

我得到这个错误：

Unable to load PKCS12 identity

这是我的iosPack.json：

{   "applicationName":"XXXXX",

    "applicationId":"yyyyyyy",

   "bundleSeedId":"ZZZZZZZZZZ",

   "versionString":"0.1",

   "versionCode":"1",

   "icon": {
    "57":"resources/icons/icon4.png",
    "72":"resources/icons/icon3.png",
    "114":"resources/icons/icon2.png",
    "144":"resources/icons/icon1.png"
   },

   "inputPath":"./",

   "outputPath":"./build/",

   "configuration":"Debug",

   "platform":"iOS",

   "deviceType":"iPhone",

   "certificatePath":"./certifs/ios_development.cer",

   "orientations": [
    "portrait"
   ]
}

问题来自何处？

1）确保正确完成生成证书的所有步骤

2） 如果您对证书使用了密码，请尝试在配置中指定证书密码：

 "certificatePath":"./certifs/ios_development.cer",
 "certificatePassword": "Password here",

---

为了使它工作，我将cer文件转换为P12格式。P12文件将Apple开发者证书和相关私钥组合在一个文件中。本教程对该过程进行了很好的解释：