public function index()
{
$data = ['title' => trans('texts.invoices'), 'entityType' => ENTITY_INVOICE, 'sortCol' => '3', 'columns' => Utils::trans(['checkbox', 'invoice_number', 'client', 'invoice_date', 'invoice_total', 'balance_due', 'due_date', 'status', ''])];
return response()->view('list', $data);
}