I cannot get this mod to work, I have tried many things other than removing all my other mods first.
Forge 1.12.2 14.23.5.2854
controllable-1.12.2-0.8.0

I attached the crash report.

crash-2020-08-27_23.12.50-client.txt

I don't maintain 1.12.2 anymore. You'll have to switch to an earlier version (< 0.8.0) to fix this issue.