iOs 构建失败 - UnhandledPromiseRejectionWarning: TypeError: 无法读取未定义的属性“toLowerCase”

Question

从昨天开始，当我尝试为 iO 进行构建时，它不会成功并抛出此错误：

(node:3043) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'toLowerCase' of undefined
    at /Users/username/Documents/petpo-fe-mobile-bugs/platforms/ios/cordova/lib/list-emulator-build-targets:54:45
    at Array.forEach (<anonymous>)
    at /Users/username/Documents/petpo-fe-mobile-bugs/platforms/ios/cordova/lib/list-emulator-build-targets:52:44
    at Array.reduce (<anonymous>)
    at /Users/username/Documents/petpo-fe-mobile-bugs/platforms/ios/cordova/lib/list-emulator-build-targets:50:57
    at Array.reduce (<anonymous>)
    at /Users/username/Documents/petpo-fe-mobile-bugs/platforms/ios/cordova/lib/list-emulator-build-targets:45:28
    at _fulfilled (/Users/username/Documents/petpo-fe-mobile-bugs/platforms/ios/cordova/node_modules/q/q.js:854:54)
    at /Users/username/Documents/petpo-fe-mobile-bugs/platforms/ios/cordova/node_modules/q/q.js:883:30
    at Promise.promise.promiseDispatch (/Users/username/Documents/petpo-fe-mobile-bugs/platforms/ios/cordova/node_modules/q/q.js:816:13)
(node:3043) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:3043) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

我已经尝试从 git 中检查出一个新项目，删除和重新安装模块，删除和读取 ionic 平台，我不知道我还能尝试什么。请问，有人能给我一些关于这个问题的启示吗？

提前致谢。

Answer 1

toLowerCase在plugins/cordova-plugin-ios-localized-strings/scripts/add_supported_languages.js中使用？

如果是，则该值未定义。

请尝试运行：ionic build --prod

如果您遇到错误 -> 您的代码有问题。

如果您没有遇到错误 -> 问题发生在 cordova 捆绑您的应用程序时。

如果是最后一个选项，请从 bash （而不是 cmd）执行：ionic cordova build ios --prod或尝试再次删除并添加您的平台。

-此致。