Spout write excel

<?php
            require_once $_SERVER['DOCUMENT_ROOT'].'/lib/Spout/Autoloader/autoload.php';

            use Box\Spout\Common\Type;
            use Box\Spout\Writer\Style\Border;
            use Box\Spout\Writer\Style\BorderBuilder;
            use Box\Spout\Writer\Style\Color;
            use Box\Spout\Writer\Style\StyleBuilder;
            use Box\Spout\Writer\WriterFactory;

$ID=(int)$ID;
            $border = (new BorderBuilder())
                ->setBorderBottom(Color::BLACK, Border::WIDTH_THIN, Border::STYLE_SOLID)
                ->setBorderTop(Color::BLACK, Border::WIDTH_THIN, Border::STYLE_SOLID)
                ->setBorderLeft(Color::BLACK, Border::WIDTH_THIN, Border::STYLE_SOLID)
                ->setBorderRight(Color::BLACK, Border::WIDTH_THIN, Border::STYLE_SOLID)
                ->build();

            $style = (new StyleBuilder())
            ->setBorder($border)
           ->setFontBold()
           ->setFontColor(Color::BLACK)
           ->setBackgroundColor(Color::YELLOW)
           ->build();
           ####
             $writer = WriterFactory::create(Type::XLSX);

                if($dir) $writer->openToFile($dir.$filePath.'.xlsx');
                else $writer->openToBrowser($filePath.'.xlsx');

                $writer->getCurrentSheet()->setName('Price');
                                    $singleRow=array('Производитель',
                                                    'Артикул',
                                                    );
               $writer->addRowWithStyle($singleRow, $style);

            $sql='SELECT ';
$result=$this->sqli->real_query($sql);
    do {
        /* получаем первый результирующий набор */
        if ($result = $this->sqli->use_result()) {
                                while ($row = $result->fetch_assoc()) {
                                                    $writer->addRow(array(  $row['brand'],
                                                                            $row['art'],
                                                                            ));
                                }
                                $result->close();

        }


        unset($row);
        if (!$this->sqli->more_results())break;
        } while ($this->sqli->next_result());
                      $writer->close();