Issue type:

Failed to load at startup

Steps to reproduce the problem:

Load game with latest evilcraft

Versions:

• This mod: 1.0.8
• Minecraft: 1.16.5
• Forge: 36.0.14

Log file:

https://pastebin.com/Ys2JaMTf

This doesn't seem to be an EC issue.
I see Optifine mentioned in the logs though, so that's likely your problem.

In any case, it's important to test these cases always without any other mods installed.