Could not build Objective-C module 'A', 'MessageKit/MessageKit.h' file not found.

[karunpant-pcln]

I have a iOS App project setup with 4 Module (XCode projects in a workspace)
Module A - Has package MessageKit and responsible for creating UI (Swift only but has @objcMembers classes)
Module B - Uses Module A to create and show UI on it's screens, doesn't have/need MessageKit (Swift only but has @objcMembers classes)
Module C - Uses Module A to create and show UI on it's screens, doesn't have/need MessageKit (Swift only but has @objcMembers classes)
Module D - Main Module contains AppDelegate and main function (Objc + swift)

Now the issue is if I build module A only it builds correctly. But when I build module B or C or even try to run the app which call module A it says Could not build Objective-C module 'A', 'MessageKit/MessageKit.h' file not found.
What could it be that I am missing. Need Help in resolving this.