Hello, it's not an error but a solution to use Controllable on ATM8. You need to download version controllable-0.16.6-1.19.2. Make sure to check the 'meta inf/mods.toml' file to ensure that it is using the correct version of Forge (43). Once you've done that, it should work. Here's the link to download Forge: https://www.curseforge.com/minecraft/mc-mods/controllable/files/4120620.