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”。

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]

如果使用Carthage，请确保使用copy-frameworks脚本，而不是使用Embed & Sign作为嵌入内容。我得到了同样的错误，因为我忘记了。

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

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