水豚无法找到元素

Question

我无法让Capybara在这里找到一个元素;

<div class="block__body">
  <div class="programme-list">
    <div class="programme-item">
      <div class="programme-item__header">
        <svg class="icon icon--type">
          <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icons-flexi"></use>
        </svg>
        <h3 class="programme-item__title">Flexi programmes</h3>
      </div>
      <div class="programme-item__body">
        <ul class="list-style-none">
          <div class="progress">
            <div class="progress__status">
              <div class="progress__total">
                <span class="progress__label">
                  Total <strong>£265000</strong>
                </span>
              </div>
              <a class="action action--link action--understate" href="/sponsors/1/programmes/sport-fit-scheme-1">
                <span class="action__label">Sport Fit Scheme</span>
                <!--<svg class="icon icon--arrow">
                  <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icons-chevron-right"></use>
                </svg>-->
              </a>

这是我的rspec文件中的代码。

scenario 'Update programme' do
  programme = create(
    :programme,
    id: 2,
    name: 'Acme Two Programme',
    description: 'The description for the Acme Two Programme',
    account: create(:account)
  )

  sign_in_as(admin)

  click_link 'Programmes'

  within(:css, '.programme-list') do
    within(:css, '.programme-item') do # this does not work...
    end
  end

我得到的错误是;

Capybara::ElementNotFound: Unable to find css ".programme-item"

为什么找不到元素？是因为我在理论上有几个同名的元素吗？如果是这样，我怎么能只指定一个？