The details:

Medieval Origins Mod version 4.1.3
Minecraft 1.19.2
Fabric 0.14.22
No other mods but the dependencies (Fabric API 0.76.1+1.19.2, Origins 1.19.2-1.7.1, Pehkui 3.7.8+1.14.4-1.20.1)
Here is the log: Medieval-Origins-Log.log and the parts that I can see that I think are wrong are:

[17:17:15] [Worker-Main-15/ERROR]: Couldn't load tag medievalorigins:cakes as it is missing following references: minecraft:candle_cake (from Medieval Origins), minecraft:white_candle_cake (from Medieval Origins), minecraft:orange_candle_cake (from Medieval Origins), minecraft:magenta_candle_cake (from Medieval Origins), minecraft:light_blue_candle_cake (from Medieval Origins), minecraft:yellow_candle_cake (from Medieval Origins), minecraft:lime_candle_cake (from Medieval Origins), minecraft:pink_candle_cake (from Medieval Origins), minecraft:gray_candle_cake (from Medieval Origins), minecraft:light_gray_candle_cake (from Medieval Origins), minecraft:cyan_candle_cake (from Medieval Origins), minecraft:purple_candle_cake (from Medieval Origins), minecraft:blue_candle_cake (from Medieval Origins), minecraft:brown_candle_cake (from Medieval Origins), minecraft:green_candle_cake (from Medieval Origins), minecraft:red_candle_cake (from Medieval Origins), minecraft:black_candle_cake (from Medieval Origins)
[17:17:15] [Worker-Main-15/ERROR]: Couldn't load tag medievalorigins:crops as it is missing following references: minecraft:carrots (from Medieval Origins), minecraft:potatoes (from Medieval Origins), minecraft:beetroots (from Medieval Origins), minecraft:cocao (from Medieval Origins), minecraft:sweet_berry_bush (from Medieval Origins)
[17:17:15] [Render thread/INFO]: Loaded 7 recipes
[17:17:16] [Render thread/INFO]: Loaded 1181 advancements
[17:17:16] [Render thread/INFO]: Finished loading powers from data files. Registry contains 305 powers.
[17:17:16] [Render thread/ERROR]: Origin "medievalorigins:troll" contained unregistered power: "medievalorigins:troll/dweller_of_the_hills"
[17:17:16] [Render thread/INFO]: Finished loading origins from data files. Registry contains 29 origins.
[17:17:16] [Render thread/INFO]: Trying to read layer file: origins:origin
[17:17:16] [Render thread/INFO]: Trying to read layer file: origins:origin
[17:17:16] [Render thread/INFO]: Finished loading origin layers from data files. Read 1 layers.
[17:17:18] [Worker-Bootstrap-5/INFO]: 4283 Datafixer optimizations took 30256 milliseconds
[17:17:57] [Worker-Main-18/ERROR]: Couldn't load tag medievalorigins:cakes as it is missing following references: minecraft:candle_cake (from Medieval Origins), minecraft:white_candle_cake (from Medieval Origins), minecraft:orange_candle_cake (from Medieval Origins), minecraft:magenta_candle_cake (from Medieval Origins), minecraft:light_blue_candle_cake (from Medieval Origins), minecraft:yellow_candle_cake (from Medieval Origins), minecraft:lime_candle_cake (from Medieval Origins), minecraft:pink_candle_cake (from Medieval Origins), minecraft:gray_candle_cake (from Medieval Origins), minecraft:light_gray_candle_cake (from Medieval Origins), minecraft:cyan_candle_cake (from Medieval Origins), minecraft:purple_candle_cake (from Medieval Origins), minecraft:blue_candle_cake (from Medieval Origins), minecraft:brown_candle_cake (from Medieval Origins), minecraft:green_candle_cake (from Medieval Origins), minecraft:red_candle_cake (from Medieval Origins), minecraft:black_candle_cake (from Medieval Origins)
[17:17:57] [Worker-Main-18/ERROR]: Couldn't load tag medievalorigins:crops as it is missing following references: minecraft:carrots (from Medieval Origins), minecraft:potatoes (from Medieval Origins), minecraft:beetroots (from Medieval Origins), minecraft:cocao (from Medieval Origins), minecraft:sweet_berry_bush (from Medieval Origins)
[17:17:57] [Render thread/INFO]: Loaded 7 recipes
[17:17:57] [Render thread/INFO]: Loaded 1181 advancements
[17:17:57] [Render thread/INFO]: Finished loading powers from data files. Registry contains 305 powers.
[17:17:57] [Render thread/ERROR]: Origin "medievalorigins:troll" contained unregistered power: "medievalorigins:troll/dweller_of_the_hills"

If the "Troll" origin is selected then the game immediately crashes. The crash log is: crash-2023-09-25_17.34.11-server.txt

Thank you and please don't feel rushed to fix this.