Hello, dear developer. I found a problem with using your Minecraft mod Subaquatic. It crashes when used together with the Tweakeroo mod. This is the conclusion I reached after excluding all the mods and letting them test independently.
Minecraft: 1.12.2-Forge_14.23.5.2860.
Subaquatic: All versions.
Tweakeroo: Forge-1.12.2-0.10.0-dev.20201007.231650.
Crash log:错误报告-2023-10-5_12.42.34.zip
Another mod: https://github.com/maruohon/tweakeroo/