I've been trying to put together a modpack for a while now that’s supposed to be a 1.16.5 version of RLCraft. So far I’ve fairly strictly stayed with the modlist that this video provides in the description: https://www.youtube.com/watch?v=Ypye_7Tt_cI&t=216s.
However, I've run into problems at almost every angle. This is my first time dealing with this many mods so even though I had expected to run into some trouble I was still surprised that it took me almost a week just to get this thing to the title screen.
Anyway, the new problem I'm facing is that when I tried to create a world to test out my modpack it gave me this error message: "Errors in currently selected datapacks prevented the world from loading. You can either try to load it with only the vanilla datapack ("safe mode"), or go back to the title screen and fix it manually.” If I try to click the 'safe mode' button nothing happens, and likewise, the game will not even allow me to unload all of the mod datapacks manually as it just tells me "Data pack validation failed!"
I did some looking around and it looks like this problem is caused when one or more of the mods has a faulty datapack or something. I had heard that Ice and Fire is a mod that commonly causes this issue so I tried removing it to no avail (all the better though, Ice and Fire is a pretty big part of RLCraft). In any case, I have no idea how to fix this other than going through and adding in each mod individually until I stumble across the culprit. I don’t know much about debug logs either but I heard they could be useful for figuring out issues like this so I attached what I’m pretty sure is the appropriate file.
Also here's a list of the mods I'm using in case it helps:
TenshiLib
Horse Combat Controls
Ambient Sounds
UnionLib
Mouse Tweaks
Spheric
Biomes O' Plenty
Big Brain
Shoulder Surfing
Weeping Angels
CreativeCore
Just Enough Items
IguanaTweaks Reborn
Whisperwoods
InsaneLib
Create
Total Darkness
Realistic Sleep
TerraForged
Falling Leaves
Epic Fight Mod
Better Weather
Citadel
Alex's Mobs
Better Third Person
Survive
Champions
Dungeon Crawl
Bookshelf
HerdMentality
Realistic Torches
Ice and Fire
JEI Tweaker
Rereskillable
Enhanced Celestials
CraftTweaker
First Aid
No Tree Punching
Dynamic Trees
Dynamic Trees Plus
Dynamic Surroundings (Sound Control, Environs, Mob Effects)
debug.log