What happens:

importing enderio package returns an error.
(Unsure if this is an EnderIO issue so posting here to begin with)

What you expected to happen:

Importing the enderio package correctly.

Script used:

https://pastebin.com/SqR47r4M
(Don't judge I'm new to this)

Crafttweaker.log file

https://pastebin.com/7zuvmB0E

Affected Versions:

Minecraft: 1.12.2
Forge: forge-14.23.5.2815
Crafttweaker: CraftTweaker2-1.12-4.1.14
EnderIO: EnderIO-1.12.2-5.0.40
Using a server: No

Do you have EnderTweaker installed?
Neither EIO, nor ModTweaker add the support, that's a 3rd party addon.

Oh sorry didn't realise I needed an addon for the EnderIO support 😅 thank you for letting me know, it works now! 👍