DaemonUmbra

I'm getting a bit tired of this so let's try it the old fashioned way. Install Minecraft outside of Twitch, install Forge, and copy all the folders from twitch into %AppData%/.minecraft/

Hmm, it looks like Twitch borked the installation of Forge.

Use the native launcher, do you get the same issue?

Yes that is what I mean, however I don't see any issues with that particular log.

Why are you using a repo for posting logs? Use https://gist.github.com instead, it's like GitHub's take on Pastebin

What launcher are you using, Technic or Twitch? You've made mention of both.

Again i must point out that you appear to be going from zero to coremodding without trying to do what you want to do with a normal mod.

Did you use the script with a fresh install of the modpack or have you run the pack before?

You say 1.12.2 but the log you provided says 1.7.10.

Is this a LAN server or a dedicated? If it's a dedicated please provide logs for both clients as well as the server. Please read my signature below for more info on the preferred methods of sharing logs.

Was this an existing world or a new one? If it was an existing one do you have a backup?

The filenames of some of your mods suggests you are not getting them from official sources, please read my signature for more info on why this is a bad thing.

This isn't coming from Forge or Minecraft, this is coming out of Java itself or a native library. Is this a client or a server and how are you launching it?

That would be the file that is the launcher itself, in this case called minecraft.exe For Twitch it should be located inside your Twitch installation in the "Install" folder. To be brutally honest, this should be basic computer knowledge, just use Explorer (the Windows file manager) to put the script in the same folder as minecraft.exe In my signature I list them by Operating System, currently I only have one for Windows.

How what?

If you ran it from Twitch you need to edit the file again. To run the game so this fix works you'll need to use the bat file from my signature.

Well you shouldn't be downloading the universal either way actually, use the installer.

Are you trying to run a client or a server?

Whatever mod this is, try removing it.

Sounds like you should check the console for possible error messages

Coremodding is also out of scope, as coremod authors are expected to know what they are doing and have a valid reason for not doing what they want without coremodding. If your entire purpose for this project is to "inject" or "coremod" or "manipulate bytecode", you will not find help here. If you are trying to make the autoclicker for the sake of an autoclicker, try doing it with what Forge provides out of the box.

1.7.10 is no longer supported on this forum due to its age. Please update to a modern version of Minecraft to receive support.

Please read the "Logs" section of my signature below and provide the appropriate log in the appropriate manner.

As far as I know Optifine does not have a release compatible with Forge yet, apparently there is a preview version that is supposedly compatible though.