vue脚手架，动态绑定背景图不显示

仅做个人记录使用——

<div class="swiper-wrapper">
      <div class="swiper-slide" v-for="item in bannerList" :key="item.id">
        <div
          v-if="item.source_url"
          :style="`background-image: url('${item.source_url}')`"
          class="slide-img"
        >
          {{ item.source_url }}
        </div>
        <!-- <img :src="item.source_url" alt="" /> -->
      </div>
    </div>