在我的案例中，我在集成WatchKit应用程序后得到了同样的错误。为了解决问题，我需要在Podfile中添加WatchKit的两个目标:

target 'MyProject WatchKit App' do
    platform :watchos, '2.0'
    shared_pods
end

target 'MyProject WatchKit App Extension' do
    platform :watchos, '2.0'
    shared_pods
end

PS:也许这发生在我身上，因为我错误地为MyProject WatchKit应用程序目标最初安装了pods。

我在最新的ComponentKit 0.14上也有同样的问题。 原因是PODS_ROOT没有设置，我发现解决方案是添加一行到ComponentKit。xcconfig:

#include "../Pods/Target Support Files/Pods-ComponentKit/Pods-ComponentKit.debug.xcconfig"

我在Flutter项目中遇到了这个问题。我刚刚在xCode中打开了iOS模块，Build Clean Folder对我来说很有效。

运行这个程序，错误就会消失

cocoapods && pod安装

Completely nothing worked out for me from these answers. Had to create the project again by running cordova platform add ios. What I've noticed, even freshly generated project with (in my case) Firebase pods caused the error message over and over again. In my opinion looks like a bug for some (Firebase, RestKit) pods in Xcode or CocoaPods. To have the pods included I could simply edit my config.xml and run cordova platform add iOS, which did everything for me automatically. Not sure if it will work in all scenarios though.

编辑:我有一个Podfile从以前的iOS/Xcode，但最新的今天有# DO NOT MODIFY -自动生成的Apache Cordova在Podfile。这让我的脑海中亮起了一盏灯，开始尝试这种方法。看起来有点琐碎，但很管用，我的Firebase功能也很管用。

我可以通过更新CocoaPods来解决这个问题。

一、项目清理

在项目导航器中，选择您的项目 选择目标 删除所有libpod *。a在构建阶段>链接二进制与库

2更新CocoaPods

启动终端并转到项目目录。 使用命令荚install更新CocoaPods