未捕获（承诺中）类型错误：无法读取属性'；长度'；使用REVOLUTION SLIDER和twitter api设置null

我的项目使用旋转滑块。这是它的代码

<div id="rev_slider_2_1" class="rev_slider fullscreenbanner" style="display:none;" data-version="5.2.6">
            <ul>    <!-- SLIDE  -->
                <li data-index="rs-13" data-transition="slidingoverlayup" data-slotamount="default" data-hideafterloop="0" data-hideslideonmobile="off"  data-easein="default" data-easeout="default" data-masterspeed="default"  data-thumb="rev-slider/img/slider-bg.jpg"  data-rotate="0"  data-saveperformance="off"  data-title="Slide" data-param1="" data-param2="" data-param3="" data-param4="" data-param5="" data-param6="" data-param7="" data-param8="" data-param9="" data-param10="" data-description="">
                    <!-- MAIN IMAGE -->
                    <img src="rev-slider/img/slider-bg.jpg"  alt="" title="slider-bg"  width="1920" height="750" data-bgposition="center center" data-bgfit="cover" data-bgrepeat="no-repeat" class="rev-slidebg" data-no-retina>
                </li>
                <!-- /slide -->
                <li data-index="rs-15" data-transition="slidingoverlayup" data-slotamount="default" data-hideafterloop="0" data-hideslideonmobile="off"  data-easein="default" data-easeout="default" data-masterspeed="default"  data-thumb="rev-slider/img/slider-bg.jpg"  data-rotate="0"  data-saveperformance="off"  data-title="Slide" data-param1="" data-param2="" data-param3="" data-param4="" data-param5="" data-param6="" data-param7="" data-param8="" data-param9="" data-param10="" data-description="">
                    <!-- MAIN IMAGE -->
                    <img src="rev-slider/img/slider-bg.jpg"  alt="" title="slider-bg"  width="1920" height="750" data-bgposition="center center" data-bgfit="cover" data-bgrepeat="no-repeat" class="rev-slidebg" data-no-retina>

                </li>
                <!-- SLIDE  -->
            </ul>
        </div>

我正在使用twitter。这就是代码

<a class="twitter-timeline" data-height="200" data-theme="dark" href="https://twitter.com/BloodneedsLife?ref_src=twsrc%5Etfw">Tweets by BloodneedsLife</a> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>

但不幸的是，我得到了这个错误

未捕获（承诺中）TypeError:无法读取null的属性“length”

我使用的是REVOLUTION SLIDER 5.2.6，我注意到从SLIDER main div中删除了data version=“5.2.6”，使tweeter timeline出现，但它停止了滑块的工作