Fix：3156 【商城小程序】客服消息--点击商品卡片跳转到商品详情页，在商品详情页中点击“客服”，聊天记录显示空白

pages/shop/GoodsCon/index.vue

@@ -812,6 +812,7 @@ export default {
       })
     },
     goRoom() {
+      console.log(this.systemStore);
       const params = {
         goodsId: this.id,
         goodsName: this.attr.productSelect.store_name,
@@ -822,8 +823,9 @@ export default {
         goodsData: '',
         seckillData: ''
       }
+      const name = this.systemStore && this.systemStore.name || this.storeInfo.merName
       uni.navigateTo({
-        url: `/pkg_common/views/room?id=${this.storeInfo.merId}&name=${this. systemStore.name}&params=${JSON.stringify(params)}`
+        url: `/pkg_common/views/room?id=${this.storeInfo.merId}&name=${name}&params=${JSON.stringify(params)}`
       })
     },
     goodsDetail(item) {