Module compiled with Swift 4.0 cannot be imported in Swift 4.0.1

Question

However I have recompiled the framework using the same Xcode and it still gives me this error.

• Base SDK iOS 11.1 for both
• Swift Language Version Swi

Answer 1

In my case (Xcode 9.2):

I went to Xcode Preferences > Locations > Derived Data

I then deleted the data and did a clean build and was ok.

Answer 2

Install Xcode Toolchain of specific Xcode version which was working for you from here.

An Xcode toolchain includes a copy of the compiler, lldb, and other related tools needed to provide a cohesive development experience for working in a specific version of Swift.

Open Xcode's Preferences, navigate to Components > Toolchains , and select the installed Swift toolchain.

This will let you compile and run the app for now.