DaemonUmbra

If you're on Windows you can use snipping tool

Screenshot of the server folder showing the Forge file?

What version of Minecraft are you using?

and when you went through adfocus you made sure to click the "skip" button and nothing else, right?

Can you give me a link? I've had a lot of people say they got it from the "Official Site" and then they give me a link to a lookalike

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

Ok then where did you get Forge from? You say the file is named "forge_server" and that doesn't sound right to me.

Is your server hosted by a company or is it on your computer? Additionally, when you say "server" are you actually running a server or are you clicking "open to lan"?

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

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

Are you using a server host or is it on your PC?

How did you start the server? By starting the vanilla jar or the Forge jar? If you don't have a Forge jar to start then you didn't install a Forge server.

If a mod isn't client-only it needs to be present on the server and all clients. and the server needs to be a Forge server in this case as well.

FTB Continuum is a 1.12.2 pack, which is out of support. The supported versions, 1.14.4 and 1.15.2 have parallel mod loading, which speeds up loading SUBSTANTIALLY. And are we going to get into the amount of disk space such a system would eventually build up to? I don't feel like periodically cleaning my disk of cached texture atlases, especially since different packs with the same mods would cause a new atlas set to be cached, and a resource pack change would cause a re-cache, and pack devs would see their test installation bloat with every mod added to the pack. To be honest to me it sounds like effort that would save maybe a second or two of loading at the cost of disk space. I'd rather wait a couple seconds.

Do you mean this? https://www.curseforge.com/minecraft/mc-mods/terraforged

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

Why do you have 1.15 instead of 1.15.2?

Please post debug.log using one of the paste sites listed in my signature below. Please do not edit logs before submitting them

Do you know Java or are you following a tutorial letter for letter?

Ancient thread that pertains to old versions, also please don't rename your Forge jars.

This is looking like your world may be corrupted, do you have a backup?

What you are seeing are methods and parameters that do not have an MCP Name yet (see my post linked below), you can contribute names for them through IRC (#mcpbot on EsperNet, /msg MCPBot_Reborn help).

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

What kind of processor do you have?