错误日志：TypeError: ejs:66
    64|       <a href="pros.html?pageSize=6" class="text1"><%= language.headerNav1 %></a>
    65|       >
 >> 66|       <a href="<%= detailCurrentProsTypeUrl() %>" class="text1"><%= productDetail.data.classifyName %></a>
    67|       >
    68|       <a href="product-detail.html" class="text2"><%= productDetail.data.productName %></a>
    69|     </div>

Cannot read properties of undefined (reading 'classifyName')