net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Tinkers' Reforged (tinkers_reforged) Caused by: slimeknights.tconstruct.library.TinkerAPIException: [TCon API] Could not add Trait to "reforged_fluix_crystal": Trait "skeletal_armor" was already registered by Unknown

Try the tinkers_reforged-1.1.3
after testing, conflict the conarm-1.12.2-1.2.5.8
since Construct's Armory loaded first, Tinkers' Reforged should check for conflict
hope you can fix it, thanks

update to the latest version. i fixed that in future version.