使用taro api报错怎么处理呢？

```
./src/app.ts
Attempted import error: 'setTabBarItem' is not exported from 'tarojs-plugin-platform-nextjs/taro' (imported as 'setTabBarItem').
./src/app.ts
Attempted import error: 'showTabBar' is not exported from 'tarojs-plugin-platform-nextjs/taro' (imported as 'showTabBar').
....
```
