https://pastebin.com/5xvM26J0

Enigmatic-Legacy will need to update their mixin, or better yet, use squeek.appleskin.api.event.TooltipOverlayEvent

the worst thing happened. some mods mixin TooltipOverlayHandler.

Added proper instructions for how to use the AppleSkin API with Forge: https://github.com/squeek502/AppleSkin#for-mod-developers

Enigmatic-Legacy will need to update their mixin, or better yet, use squeek.appleskin.api.event.TooltipOverlayEvent

Is this the same issue, I do have Enigmatic Legacy installed and this error showed up today and just wondering if I need to make a new issue to prevent posting the same thing

Is this the same issue

Yep, same problem.

Enigmatic hasn't updated in 3 months though so wouldn't it be Apple Skin that needs to fix?

Based on a recent update this should be fixed, I haven't had the chance to try it out though.