错误日志：TypeError: ejs:87
    85|                 <% } %>
    86|                 <div class="pro-data-main">
 >> 87|                     <% if(productList && productList.rows.length !== 0){ %>
    88|                         <% productList.rows.forEach(item=>{ %>
    89|                             <a class="pro-data-one" href="pro-detail.html?productDetailsId=<%= item.productDetailsId %>">
    90|                                 <p class="pro-data-title"><%= item.productName %></p>

Cannot read properties of undefined (reading 'length')