why does the ObjectOutputStream throw the invalid stream header 000000 error?

Question

the method receives a stream of bytes and returns an object of type Data. Everything works fine without threads. But when using threads, the method causes the invalid stream header 00000 error.

public synchronized Data byteToData(byte[] bytes) throws IOException, ClassNotFoundException {
    ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
    ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
    objectInputStream.close();
    byteArrayInputStream.close();
    return (Data) objectInputStream.readObject();
}