无法在表格中添加边框样式(phpword)

require_once 'vendor/autoload.php';

use PhpOffice\PhpWord\PhpWord;
use PhpOffice\PhpWord\Style\Border;

// 创建一个新的文档
$phpWord = new PhpWord();

// 添加一个表格
$table = $phpWord->addTable(3, 3);

// 获取表格的第一个单元格
$cell = $table->getCell(0, 0);

// 设置边框样式
$styleArray = array(
    'borderSize' => 6,
    'borderColor' => '000000',
    'borderStyle' => Border::STYLE_SOLID,
);

$cell->getBorderTop()->setStyle($styleArray);
$cell->getBorderRight()->setStyle($styleArray);
$cell->getBorderBottom()->setStyle($styleArray);
$cell->getBorderLeft()->setStyle($styleArray);

// 保存文档
$objWriter = \PhpOffice\PhpWord\IOFactory::createWriter($phpWord, 'Word2007');
$objWriter->save('example.docx');