import java.io.ByteArrayInputStream;
import java.io.ObjectInputStream;

public class CollSerInternalError {
    public static void main(String... args) throws Exception {
        byte[] serialData = new byte[] {-84, -19, 0, 5, 115, 114, 0, 17, 106, 97, 118, 97, 46, 117, 116, 105, 108, 46, 67, 111, 108, 108, 83, 101, 114, 87, -114, -85, -74, 58, 27, -88, 17, 3, 0, 1, 73, 0, 3, 116, 97, 103, 120, 112, 0, 0, 0, 3, 119, 4, 0, 0, 0, 1, 116, 0, 1, 97, 120};
        ObjectInputStream objIn = new ObjectInputStream(new ByteArrayInputStream(serialData));
        objIn.readObject();
    }
}