I have a problem. In my game, you start out with an empty recipe book which you will fill over time. This is my code for the book: <recipe_book> category: 0 </recipe_book> When I do this, I get an error even before the game menu screen loads: "TypeError - Cannot read property 'forEach' of null". Removing the "category: 0" helps, however the recipes I add using the plugin command "CraftingSystem add_recipe 3: i1" do not show up. So I did this: <recipe_book> category: 0 i: </recipe_book> That prevents the error, but it also adds an empty recipe that will cause the game to crash whenever I select it: "TypeError - Cannot reat property '_ingredients' of undefined. This means apparently it is not possible to add an empty recipe book to the game. The book must contain at least one recipe from the get-go. Can this be fixed so one can add an empty recipe book?