When I execute my app with basic Firebase setup as shown below
FileInputStream serviceAccount = new FileInputStream("path/to/serviceAccountKey.json");
FirebaseOptions options = new FirebaseOptions.Builder()
.setCredential(FirebaseCredentials.fromCertificate(serviceAccount))
.setDatabaseUrl("https://<DATABASE_NAME>.firebaseio.com/")
.build();
FirebaseApp.initializeApp(options);
FirebaseDatabase db = FirebaseDatabase.getInstance() // error
I get the following error
Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkState(ZLjava/lang/String;Ljava/lang/Object;)V
at com.google.firebase.FirebaseApp.checkNotDeleted(FirebaseApp.java:314)
I saw that this might happen because of the low guava version, but the thing is, I'm not using it as a direct dependency (only through Firebase).