Versioning
Which version of Minecraft, which mod version, and which modloader are you using (Forge, Neoforge etc).
Some error reports don't even specify which mod has a bug...
Ruins 1.19.2.1 and im using forge 1.19.2-43.4.6. My minecraft version is 1.19.2.

What did you do
What do i have to do on my end to see the problem.
I just put the ruins_config file inside the configs and launched my minecraft expecting to fix the issue but no it did NOT fix the issue.
Expected behavior
A clear and concise description of what you expected to happen.
I expected the mod to work well with no flaws or issues on the way.
Screenshots/Video
If applicable, add media to help explain your problem.

Good report! Could have been even better with the latest.log but thats OK i can reproduce this

[30Nov2024 09:23:59.555] [modloading-worker-0/ERROR] [net.minecraftforge.fml.javafmlmod.FMLModContainer/LOADING]: Failed to create mod instance. ModID: ruins, class atomicstryker.ruins.common.RuinsMod
java.lang.NoSuchMethodError: 'com.mojang.brigadier.builder.LiteralArgumentBuilder net.minecraft.commands.Commands.literal(java.lang.String)'
at atomicstryker.ruins.common.CommandParseTemplate.(CommandParseTemplate.java:20) ~[ruins-1.19.2.1.jar%23153!/:1.19.2.1]
at atomicstryker.ruins.common.RuinsMod.(RuinsMod.java:60) ~[ruins-1.19.2.1.jar%23153!/:1.19.2.1]

Let me check out why this doesnt happen in test runs.

My bad, i uploaded a jar that was not reobfuscated.

I deleted the file from curse and uploaded an obfuscated one, the problem is gone for me locally.

Thanks for reporting it.

Alright thanks.

I am running into the same problem, see attached file.
latest.log

Make sure to download the current 1.19.2 version from curse https://www.curseforge.com/minecraft/mc-mods/ruins-structure-spawning-system/files/all?page=1&pageSize=20

The one uploaded on November 30