Cocoapod Library: Module compiled with Swift 5.2.4 cannot be imported by the Swift 5.3 compiler

I am using ProximiioMapbox cocoapod library, and it says i can not import it on XCode 12. It compiles well after pod install, but when i add import ProximiioMapbox in a swift file, it shows error like the title of this question.

Here are the ways i tried.

1. Clean Build Folder
2. Remove Derived data and restart XCode.
3. In Podfile, I tried to set the config.build_settings[SWIFT_VERSION] = 5.2.4// also tried 5.0, 5.1, 4.2
4. removed Podfile.lock, and pod deintegrate and pod install. also tried pod update.

None of those worked, Anyone knows how i can solve this? As far as i am concerned, ProximiioMapbox sdk was compiled with Swift 5.2.

Dont' close this question. No answers on stackoverflow for cocoapod framework.