update: 活动列表默认图片

src/modules/tools/signIn/views/List.vue

@@ -27,7 +27,7 @@
             </el-checkbox>
           </div>
           <div class="sign-item-bd">
-            <div class="sign-item-bd-pic"><img :src="item.background_img" width="100" height="100" /></div>
+            <div class="sign-item-bd-pic"><img :src="item.background_img || 'https://webapp-pub.ezijing.com/marketing/un_upload_img.png'" width="100" height="100" /></div>
             <div class="sign-item-bd-content">
               <p>名单人数：{{ item.student_count }}<span style="margin-left:30px;">签到人数：{{ item.student_sign_count }}</span></p>
               <p>活动时间：{{ item.start_time }} 至 {{item.end_time}}</p>