DaemonUmbra

From what I can see here your client seems to be under the impression that the server is vanilla

I think this is an intellij issue that's been fixed in recent versions

Really old Minecraft versions are no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

Please don't necro old threads. If you have an issue make your own thread.

Please use one of the paste sites listed in the logs section of my signature below

So just to be clear... you are asking for help with 1.12.2 and saying it's the most recent version of Minecraft?

Please use one of the paste sites listed in the logs section of my signature, and provide your system specs as well

User was banned for piracy. Buy the game.

Please don't necro old threads. If you have an issue make your own thread.

1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

When you import the MDK into your IDE it will download and Deobfuscate Minecraft.

You're running out of ram. https://superuser.com/a/269710

If you haven't made any config changes, delete your config folder. Don't rely on a speedy response around here, we're all doing this in our free time and sometimes we're off helping other people, sometimes through other mediums

Please provide debug.log as described in the EAQ and the logs section of my signature below

A lot of the Docs are outdated, it is recommended to not make your recipes and loot tables manually, but to use datagenerators. Take a look at how Forge makes its tags and how Minecraft makes its recipes

Please provide debug.log as described in the EAQ and the logs section of my signature below, as well as your system specs

1.7 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

You already made your own thread, don't hijack someone else's out of impatience. (Response moved to your own thread)

You imported as a Gradle project, right? Not a regular Eclipse project?

What that nstep is meant to do should already have been done when you imported the project I believe

If you're referring to step 5, that step shouldn't actually be necessary

I don't think JustEnoughResources is updated to 1.15 yet. Please check out StopModReposts. Additionally to my knowledge Optifine doesn't have a version compatible with Forge 1.15.2 yet, you can check this by checking the changelog for whatever Optifine version you have.

That's not talking about a file. Please provide your full debug.log as described in the EAQ and the Logs section of my signature below