coding style

app/Datatables/Shop/InvoicesDataTable.php

@@ -29,6 +29,7 @@ class InvoicesDataTable extends DataTable
             })
             ->editColumn('customer.last_name', function (Invoice $invoice) {
                 $customer = $invoice->customer ?? false;
+
                 return $customer ? $customer->last_name.' '.$customer->first_name : '';
             })
             ->rawColumns(['action']);