Error communication Socket

Question

I have this piece of code:

public class Consulta extends AsyncTask<Void, Void, Void> {

    @Override
    protected Void doInBackground(Void... params) {
        try {
            Socket cliente = new Socket("10.20.1.100", 12345);
            ObjectInputStream entrada = new ObjectInputStream(cliente.getInputStream());
            List<PessoaMOD> pessoas = (List) entrada.readObject();
            for (PessoaMOD p : pessoas) {
                Log.d("teste", "ID: " + p.getId() + " - Nome: " + p.getNome());
            }
            entrada.close();
            Log.d("teste", "Conexão encerrada");
        } catch (Exception e) {
            Log.d("teste", "Erro: " + e);
        }

        return null;
    }
}

private void botaoComunicarServidor() {
    Button btComunicarServidor = (Button) findViewById(R.id.btComunicarServidor);
    btComunicarServidor.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            new Consulta().execute();
        }
    });
}

public class PessoaMOD implements Serializable{
    private int id;
    private String nome;

    public PessoaMOD(int id, String nome){
        setId(id);
        setNome(nome);
    }

    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getNome() {
        return nome;
    }
    public void setNome(String nome) {
        this.nome = nome;
    }
}

Gives the following error: java.lang.ClassNotFoundException: PessoaMOD

In a java application, this same code that I use on Android works...

In MANIFEST I have already released access to Internet:

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

-----------------EDIT------------------

I discovered the mistake, but I don’t know how to solve... haha

The error happens because the package name of the Personal classmod on the server is different from the package name of the client application. I put the same package name and it worked. But I changed the name just to test, I can’t change the package name... How can I fix this?