First off try to clean the project by
Command + Shift + Options + K
If I'm not mistaken, GoogleMaps framework is built from Objective-C so if there's still a problem then do the following steps:
- Create a bridging header file which you can trigger and setup automatically by creating a dummy Objective-C class in your Swift project. Xcode will then ask you if you would want to create a bridging header, click yes. Delete the dummy class you created after.
Configure the header search path to point the Pods with recursion
Do a clean-build.