有几个潜在的错误配置可能会导致这个问题，

Please confirm that you have opened the .xcworkspace but not .xcodeproj file. Also make sure you have build Social first before you build TriviaApp. Make sure that iOS Deployment Target is set same for all modules with main app. For example is TriviaApps deployment target is set to 9.0, Socials deployment target also need to be set to 9.0. Make sure your main module (TriviaApp) and your used framework (Social) have same set of configurations. i.e. If your Project has three configurations, Debug, Release, ReleasePremium than your Social framework also need to have three configurations Debug, Release, ReleasePremium. Also make sure that the archive configuration is set same for both TriviaApp and Social. i.e. if your TriviaApps archive scheme is set to ReleasePremium, your Socials archive scheme also need to be set into ReleasePremium. Please assure that you do not need to import Social in each .swift files when its already added in the Bridging-Header.h. In case of issue came from Pod files, make sure you have uncommented #use_frameworks! into use_frameworks! from you Podfile. Sometime re installing pod works if Social has any dependency on pods. If none of the above steps works, delete your derived data folder and try re building.

我的问题是有多个目标。 我用以下链接解决了这个问题: 配置pod文件正确的方式和修复构建设置

希望有人会觉得有用。

此错误也可能由框架缺少模块映射引起。如果您试图导入的框架是您自己的框架，请检查框架本身的编译器警告。在我的情况下，我的框架正在构建和到位，但有一个构建警告:

警告:没有为目标'MyFramework'找到伞头，模块映射将不会生成

通过解决这个警告(与框架头不匹配模块名有关)，我能够导入框架。

假设框架真的在那里，在道路上，等等……删除~/Library/Developer/Xcode/DerivedData/ModuleCache目录(清理项目并删除项目特定的派生数据)。

在执行标准清理时，不会重新构建ModuleCache目录。

我在xcode 10.3中也遇到了类似的问题。xCode无法识别pod中的文件。这里我是这样解决的:

进入构建阶段 用库链接二进制文件 从pods中添加框架(在我的例子中是epsignature . framework) 清理和构建项目

错误消失了。

对我来说，编辑方案->运行，并将调试配置从发布更改为调试解决问题。