Passing System.Exception to JNI

Hello.

So i've implemented Firebase crashlytics in Unity, made a plugin and a c# wrapper for the java class and everything works fine except one thing.

 public static void logException(Exception ex)
     {
         Crashlytics.logException(ex);
     }

This is the java method that sends the exception to crashlytics services. However, when i try to pass an Exception through JNI to call this static method it throws this :

Exception on emulator

So my question would be, is there a way to pass System.Exception through JNI or convert it to java.Throwable somehow? Thanks!