'qt - qstandarditemmodel::itemchanged gives an invalid qvariant with a valid index

I have the following connection in my TypeABC

connect(model, &QStandardItemModel::itemChanged, this, &TypeABC::update);

void TypeABC::update(QStandardItem *item) {
    auto data = item->data();
    auto idx = item->index();
}

after editing when I display data and index from item in TypeABC::updateOffers I get :

QVariant(Invalid) QModelIndex(1,1,0x557a76315220,QStandardItemModel(0x557a763d89e0))

on console...

Why I am getting an invalid qvariant here yet the index is alright? I am feeding the model by using QStandardItemModel::setData like :

model->setData(model->index(rowNumber, Columns::Name), name);  //name is a QString

and the tableview seems good too

c++qtqvariant


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