用户可以在此面板中切换主题，我需要在后端设置什么地方？

[david (David Taylor)]

To allow users to change themes via the hamburger menu, you need to install and enable this component:

Hamburger Theme Selector

This theme component currently only works with the Legacy sidebar setting, which is going to be discontinued. Please see Sidebar theme toggle as an alternative. Summary Hamburger Theme Selector adds a theme selector in the hamburger menu provided there is more than 1 user selectable theme. This selector works with both logged-on users and anonymous users. Repository Link https://github.com/discourse/discourse-hamburger-theme-selector …