Could not build Objective-C Module

[advra]

I've installed this using Cocoapods and when trying to build from the workspace I get the error Could not build Objective-C module 'Embassy'.

Some things I've already tried:
-cleared the derived build folder
-changed schema and tried building Embassy then the App's schema which still failed

Any ideas?

[muuvmuuv]

Got the same:

Building for debugging...
/Users/marvin/Developer/plash/api/.build/arm64-apple-macosx/debug/Embassy.build/module.modulemap:2:12: error: header '/Users/marvin/Developer/plash/api/.build/arm64-apple-macosx/debug/Embassy.build/Embassy-Swift.h' not found
    header "/Users/marvin/Developer/plash/api/.build/arm64-apple-macosx/debug/Embassy.build/Embassy-Swift.h"
           ^
/Users/marvin/Developer/plash/api/Sources/Plash/main.swift:2:8: error: could not build Objective-C module 'Embassy'
import Embassy
       ^
/Users/marvin/Developer/plash/api/.build/arm64-apple-macosx/debug/Embassy.build/module.modulemap:2:12: error: header '/Users/marvin/Developer/plash/api/.build/arm64-apple-macosx/debug/Embassy.build/Embassy-Swift.h' not found
    header "/Users/marvin/Developer/plash/api/.build/arm64-apple-macosx/debug/Embassy.build/Embassy-Swift.h"
           ^
/Users/marvin/Developer/plash/api/Sources/Plash/main.swift:2:8: error: could not build Objective-C module 'Embassy'
import Embassy
       ^