Issues when using asynchronous call

Hi Dear Backendless Team , I’ve recently started getting this error when I tried to get all items in a Table and I don’t know why…

Error:(186, 45) error: cannot access AbstractBackendlessCollection
class file for com.backendless.commons.AbstractBackendlessCollection not found
and the System higlights response Object

Backendless.Data.of(Categorias.class).find(new AsyncCallback<BackendlessCollection<Categorias>>() {
public void handleResponse(BackendlessCollection<Categorias> response)
lista_nombre_categorias = new ArrayList<String>();
for (int i = 0; i < response.getCurrentPage().size(); i++)
// objectIdCategoria.add(String.valueOf(response.getCurrentPage().get(i).get(“objectId”)));
adapter = new ArrayAdapter(getApplicationContext(), android.R.layout.simple_expandable_list_item_1, lista_nombre_categorias);

public void handleFault(BackendlessFault fault)


});Please your support
Thanks a lot.

Hello, what version of backendless android SDK do you use?

Hi Dear Sergey, I fixed this issue , I was using Backendless 3.0.6 but I changed it for 3.0.24 and everything is working well now.