我有这个问题时，我试图删除以前安装的库

@Michal的回答帮助了我

删除或卸载之前添加的库:cocoapods

对于在flutter中工作的我来说，由于现有的配置，配置没有自动添加。

添加“Pods/Target Support Files/Pods- runner /Pods- runner .profile”。xcconfig"到颤振/释放。Flutter/Debug.xcconfig和Flutter/Debug.xcconfig

解决了这个问题。

如果你在Podfile中删除目标的所有pod，例如:

target 'myTarget' do
pod 'great-stuff', '~> 4.0'  // you deleted this last pod
end

你需要从你的Xcode目标构建阶段手动删除这些构建步骤:

检查pod Manifest.lock 复制Pod资源

Cocoapods(当前稳定版本0.37.2)在运行pod install时不执行此清理。

确保pod配置文件已设置。

我有同样的问题与Ionic-3，我做了一些上面提到的步骤，但没有一个对我有效。

为离子 移除ios平台

$ ionic cordova platform remove ios
$ ionic cordova platform add ios

打开xcode，然后尝试构建。 这对我很有用:-)

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。