I would just put this in the comments but I got Rimworld on GOG so steam doesn't let me post comments on mods.

The mod Vanilla Ideology Expanded - Anima Theme replaces the stat block of Gauranlen Moss in its patch files so if it is loaded after More Plant Products then Gauranlen Moss can't be harvested.
Easy fix of just loading More Plant Products after Vanilla Ideology Expanded - Anima Theme but wanted to say something so if others run into it they wouldn't need to track down the issue themselves.
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2666998627