How to re-initialize the Dio dynamically

I would like to re-initialise the Dio Dynamically but I get a error:

```
LateInitializationError: Field '_instance@1908345598' has already been initialized.
```

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我想在软件之中动态切换DioCacheManager的Dio属性（因为涉及到多个用户，需要切换他们的Cookie以鉴权获取文件图片），但是每当我重新初始化的时候，就会遇到这样一个问题，请教一下开发者应当如何动态切换CacheManager的属性？感谢！