DaemonUmbra

What version are you using?

Use a tutorial that's not poo. https://cubicoder.github.io/tutorials/1-12-2/tutorials/

Check your mods folder for a 1.12.2 and look in there for otg core, remove it.

He's timing out, not much you can do other than move the server closer to him or possibly remove mods that do things during login. The errors you are seeing are results of him logging out rather than causes.

The filenames of one or more of your mods suggests you got them from a repost site. Please read up on the StopModReposts project (link in my signature) for info on why this is a bad thing. You wouldn't have this issue if you used the proper site(s) and read the installation instructions that only exist on the official site for one of your mods.

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

That's not the most recent log, unless you've set Windows to show file extensions it might appear to just be called debug. The filenames of one or more of your mods suggests you got them from a repost site. Please read up on the StopModReposts project (link in my signature) for info on why this is a bad thing.

The filenames of one or more of your mods suggests you got them from a repost site. Please read up on the StopModReposts project (link in my signature) for info on why this is a bad thing.

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

Update NEI

Exactly how did you install Forge without knowing where the installer is?

Remove Optifine

Please provide your installer log, it will have the same name as the installer but with .log on the end: Installer: forge-{version}-installer.jar Log: forge-{version}-installer.jar.log Note: If you have Windows Explorer set to hide file extensions(as is the default setting), they will look like this: Installer: forge-{version}-installer Log: forge-{version}-installer.jar

Use a version of Java 8 that's not HORRIBLY outdated https://adoptopenjdk.net

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

Doesn't look like you have deleted Optifine

Looks like shadersmod is broken

Post a new log then

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.

Remove Optifine

Why is this still a thing?! OTG installs a coremod via Jar-In-Jar, the coremod uses code from the main mod jar and crashes when the main mod jar is removed unless the coremod jar is removed as well. Check your mods folder for a 1.12.2 folder and check in the 1.12.2 folder for otgcore. And PLEASE complain to the OTG devs.

Try this as well: https://johann.loefflmann.net/en/software/jarfix/index.html

What launcher are you using? Please provide a screenshot.

First I would suggest updating to 1.14.4 Second you should change the name of one of your folders, exclamation points have special meaning in Java and they mess with file paths

At this point I would recommend updating to 1.14.4, if you still have problems provide a log.