1. Clean & update gradle cache:

   • delete the gradle cache:
     • windows: delete C:\Users\<YourUsername>\.gradle\caches
     • mac/linux: delete ~/.gradle/caches
   • run from project root:

     ./gradlew cleanBuildCache
     ./gradlew clean
     

   • in android studio, use File > Invalidate Caches / Restart.
   • update your gradle settings (check gradle-wrapper.properties and build.gradle).

2. Resolve unresolved references:

   • check Missing Files/Resources.

3. Rebuild the project:

   • clean and rebuild your project via android studio.

This should fix the cache corruption and compilation issues, but if that didn't work, check this detailed solution on StackOverflow.