重复的static_placeholder使占位符不可编辑

Question

我的网站上有一个新闻班次显示在每个页面上，因此我创建了static_placeholders来管理它的内容。但是，横幅在移动设备上具有不同的外观，这意味着我创建了2个部分，其中一个显示大屏幕新闻广告，另一个部分显示移动版本。但是，内容是相同的，所以我将static_placeholder从大屏幕部分复制到移动部分，如下所示：

<div class="section no-padding">
            <div class="row hide-on-large-only hide" id="announcement-mobile" style="background: linear-gradient(to bottom, #26a69a 0%, #26a69a 50%, #ffffff 50%, #ffffff 100%); ">
                <div class="col s12">
                    <div class="card">
                        <div class="card-image"><a class="btn-floating btn-flat waves-effect waves-default transparent hide-announcement" href="#!" style=""><i class="material-icons">close</i> </a>
                            {% static_placeholder "CTA billede" %}
                            <span class="card-title"><i class="material-icons">fiber_new</i> {% static_placeholder "CTA overskrift" %}</span></div>
                        <div class="card-content">
                            <p class="teal-text text-lighten-1 left-align">{% static_placeholder "CTA tekst" %}</p>
                        </div>
                        <div class="card-action">
                            {% static_placeholder "CTA links" %}
                        </div>
                    </div>
                </div>
            </div>
        </div><!-- end mobile -->
        <div class="section no-padding">
            <div class="row hide-on-med-and-down hide" id="announcement" style="background: linear-gradient(to bottom, #26a69a 0%, #26a69a 50%, #ffffff 50%, #ffffff 100%); ">
                <div class="col s12 m8 offset-m2">
                    <div class="card horizontal hoverable">
                        <div class="card-image">
                            {% static_placeholder "CTA billede" %}
                        </div>
                    <div class="card-stacked">
                        <a class="btn-floating btn-flat waves-effect waves-default transparent hide-announcement" href="#!"><i class="material-icons blue-grey-text">close</i> </a>
                        <div class="card-content blue-grey-text">
                            <span class="card-title light blue-grey-text"><i class="material-icons small">fiber_new</i>{% static_placeholder "CTA overskrift" %}  </span>
                            <div class="divider blue-grey" style="padding-bottom: 5px; margin-bottom: 15px;"></div>
                            <p class="blue-grey-text left-align">{% static_placeholder "CTA tekst" %}</p>
                        </div>
                        <div class="card-action">
                            {% static_placeholder "CTA links" %}
                        </div>
                    </div>
                    </div>
                </div>
            </div><!-- end desktop -->
        </div><!-- End CTA -->

然而，这会引发以下错误：

这导致占位符变得无法编辑。

python版本3.6.1 Django版本1.10.7 Djangocms版本3.4.4