错误日志：TypeError: ejs:59
    57|                                             data-wow-delay="0.4s"
    58|                                             style="visibility: visible; animation-duration: 2s; animation-delay: 0.4s; animation-name: fadeInUp;">
 >> 59|                                             <%= productDetail.data.productName %>
    60|                                         </div>
    61|                                     </div>
    62|                                 </div>

Cannot read properties of undefined (reading 'productName')