feat: 处理购物车上报购物车数量接口错误上报

app/web/page/activity/component/BackTop/index.vue

@@ -215,8 +215,8 @@ export default {
     },
     async getCartCount() {
       if (localStorage.get('vccToken') && isDef(this.cartIndex) && isApp) {
-        const [res] = await api.getShopCartCount();
-        this.cartCount = res.count;
+        const [res, err] = await api.getShopCartCount();
+        this.cartCount = err ? 0 : res.count || 0;
         this.$nextTick(() => {
           this.$refs.crBackTop.$forceUpdate();
         });