Jade Compiler Exception

unable to evaluate [seo.url+incubator.pictureList[0].img] - IndexOutOfBoundsException Index: 0, Size: 0 in /components/spaceIntr.jade:7

In /components/spaceIntr.jade at line 7.

3
4.spaceIntr
5  .header-banner
6    .img-block
7      img(src=seo.url+incubator.pictureList[0].img)
8    .ba-bot
9      .ba-b
10        .ba-left

Generated Output pretty raw

<!DOCTYPE html>
<html lang="zh-cn">
  <head>
    <meta charset="UTF-8">
    <meta content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no" name="viewport">
    <meta name="renderer" content="webkit">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>全国站点-蒲公英孵化器</title>
    <meta name="keywords" content="">
    <meta name="description" content="">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <link rel="stylesheet" href="/public/libs/bootstrap/css/bootstrap.css">
    <link rel="stylesheet" href="/public/libs/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="/public/libs/swiper/swiper-3.4.0.min.css">
    <link rel="stylesheet" href="/public/libs/bootstrap/css/bootstrap-datetimepicker.min.css">
    <link rel="stylesheet" href="/public/css/spaceIntr.css">
    <link rel="stylesheet" href="/public/css/thesite.css">
    <link rel="stylesheet" href="/public/css/nav.css">
    <link rel="stylesheet" href="/public/css/footer.css">
  </head>
  <body class="entry">
    <header>
      <nav class="navbar navbar-default">
        <div class="container-fluid">
          <div class="navbar-header">
            <button type="button" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar" class="navbar-toggle collapsed"><span class="sr-only">Toggle navigation</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button><a href="/index" class="navbar-brand"><img src="/public/images/pgy-head-logo-blue.png"></a>
          </div>
          <div id="navbar" class="navbar-collapse collapse">
            <ul class="nav navbar-nav">
              <li role="presentation" class="dropdown first navLi"><a data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false" class="dropdown-toggle toLink nationalBite">
                  <div class="title">全国站点</div>
                  <p>LOCATIONS</p></a>
                <ul class="dropdown-menu dropdownList">
                  <li class="menuList">
                    <p class="title">孵化器</p>
                    <ul class="provinceBox">
                      <li class="provinceList"><span><a href="#" class="provinceName">江苏</a></span>
                        <ul class="cityBox">
                          <li class="cityList"><span><a href="/getIncubator/33" class="cityName">苏州 园区</a></span></li>
                          <li class="cityList"><span><a href="/getIncubator/36" class="cityName">南京 浦口</a></span></li>
                          <li class="cityList"><span><a href="/getIncubator/39" class="cityName">苏州 昆山</a></span></li>
                          <li class="cityList"><span><a href="/getIncubator/41" class="cityName">常州 天宁区</a></span></li>
                          <li class="cityList"><span><a href="/getIncubator/45" class="cityName">苏州 张家港</a></span></li>
                        </ul>
                      </li>
                      <li class="provinceList"><span><a href="#" class="provinceName">湖北</a></span>
                        <ul class="cityBox">
                          <li class="cityList"><span><a href="/getIncubator/42" class="cityName">武汉 光谷</a></span></li>
                          <li class="cityList"><span><a href="/getIncubator/43" class="cityName">襄阳 高新区</a></span></li>
                        </ul>
                      </li>
                      <li class="provinceList"><span><a href="#" class="provinceName">上海</a></span>
                        <ul class="cityBox">
                          <li class="cityList"><span><a href="/getIncubator/34" class="cityName">上海 浦东新区</a></span></li>
                          <li class="cityList"><span><a href="/getIncubator/35" class="cityName">上海 杨浦区</a></span></li>
                        </ul>
                      </li>
                      <li class="provinceList"><span><a href="#" class="provinceName">浙江</a></span>
                        <ul class="cityBox">
                          <li class="cityList"><span><a href="/getIncubator/44" class="cityName">杭州 梦想小镇</a></span></li>
                        </ul>
                      </li>
                      <li class="provinceList"><span><a href="#" class="provinceName">安徽</a></span>
                        <ul class="cityBox">
                          <li class="cityList"><span><a href="/getIncubator/38" class="cityName">合肥 包河</a></span></li>
                        </ul>
                      </li>
                      <li class="provinceList"><span><a href="#" class="provinceName">山东</a></span>
                        <ul class="cityBox">
                          <li class="cityList"><span><a href="/getIncubator/37" class="cityName">青岛 李沧</a></span></li>
                        </ul>
                      </li>
                    </ul>
                  </li>
                  <li class="menuList">
                    <p class="title">加速器</p>
                    <ul class="provinceBox">
                      <li class="provinceList"><span><a href="#" class="provinceName">江苏</a></span>
                        <ul class="cityBox">
                          <li class="cityList"><span><a href="/getIncubator/40" class="cityName">苏州 常熟</a></span></li>
                        </ul>
                      </li>
                    </ul>
                  </li>
                </ul>
              </li>
              <li class="navLi"><a href="/info" class="toLink">
                  <div class="title"><span>活动</span><span>·</span><span>资讯</span></div>
                  <p>SR CAPITAL</p></a></li>
              <li class="navLi"><a href="http://www.shunrongvc.com/" target="_blank" class="toLink">
                  <div class="title"> 顺融资本</div>
                  <p>SR CAPITAL</p></a></li>
              <li class="navLi"><a href="/introduceUs" class="toLink">
                  <div class="title"> 关于我们</div>
                  <p>ABOUT US</p></a></li>
            </ul>
          </div>
        </div>
      </nav>
    </header>
    <div class="container-box">
      <div class="spaceIntr">
        <div class="header-banner">
          <div class="img-block"><img