QT SQLITE Query

I am quite confused what is going on here and I have to be completely missing something stupid, but...

Code:

mydb.open();
QSqlQuery query;
    query.prepare("select * from inventory");
    query.exec();

A simple query to my database that works in numerous other places, just does not function at all in one of my pushbutton slots.

Code:

0x14bfed30 //Query Result
" " //Query Error

Code:

val = ui->listView->model()->data(index).toString();
    mydb.open();
    QSqlQuery query;
    query.prepare("select * from inventory where item ='"+val+"'");
 
    if(query.exec())
    {
        while(query.next())
        {
            ui->lineEdit_shelf->setText(query.value(1).toString());
            ui->lineEdit_container->setText(query.value(2).toString());
            ui->lineEdit_finished->setText(query.value(4).toString());
            ui->lineEdit_unfinished->setText(query.value(5).toString());
            ui->textEdit_notes->setText(query.value(6).toString());
            if(query.value(3) == 1)
                ui->checkBox->setChecked(true);
            else
                ui->checkBox->setChecked(false);
        }
        mydb.close();
    }
    else
        qDebug() << query.lastError().text();
 
}

Example of setup in a listView_clicked slot. But it functions perfectly well. Any kind of guidance would be greatly appreciated, as this problem popped up while I was attempting to make an update query, and it seems to be a much bigger issue.