设置了base64数据支持，实际上没有返回 base64数据

[fish19920404]

No Template

👉 请选择一个 issue 模板 - 如果你看到了此信息, 则表示你尚未选择。

如果没有选择 issue 模板，我们将会马上将此关闭。

👉 Please follow one of the issue templates provided by the repo - if you are seeing this message, it means you haven't.

If you don't follow the issue template, we may immediately close it.