可能的原因是

framework which you are using may not be built for simulator architecture(x86_64), you can check the compatibility by going to framework folder (framework_name.framework --> modules --->framework_name.swiiftModule-->) in this path you should see arm/i386/x86_64 support files if you have updated to new Xcode, the frameworks you are using are not compatible to the newer compiler version, so vendor needs to share the recent compatible one, in this case you will not be able to run on both device and simulator

我想你所链接的框架只是为arm架构而构建的。你不能在模拟器中运行它。您将需要框架的作者来构建一个“通用框架”。

当我将我的自定义框架添加到项目中时，在我更新Xcode后，我遇到了同样的问题。

解决方案:在项目的构建设置下搜索验证工作区 更改为yes，默认设置为no

老实说，你们应该遵循的唯一方法是将.framework转换为.xcframework，因为这是苹果从XCode版本12.3及以上强制执行的。验证工作空间和其他快速修复可能是暂时的，并在未来引起问题——比如为appstore发布或测试飞行存档应用程序。

要将.framework转换为.xcframework，请遵循本文中描述的步骤，从段落命令开始: https://medium.com/strava-engineering/convert-a-universal-fat-framework-to-an-xcframework-39e33b7bd861

我在Xcode v12.3和Universal(fat) Framework(.framework)上运行了这个错误

Building for iOS Simulator, but the linked and embedded framework was built for iOS + iOS Simulator.

解决方案1:是Toggle/Toggle验证工作区(不是默认)

方案二:使用XCFramework[About]

可能的原因是

framework which you are using may not be built for simulator architecture(x86_64), you can check the compatibility by going to framework folder (framework_name.framework --> modules --->framework_name.swiiftModule-->) in this path you should see arm/i386/x86_64 support files if you have updated to new Xcode, the frameworks you are using are not compatible to the newer compiler version, so vendor needs to share the recent compatible one, in this case you will not be able to run on both device and simulator