DaemonUmbra

People who run sites like that tend to run them out of less scrupulous countries where it's impossible or otherwise very expensive to get them taken down, and then they just pop back up again at a new address. Only download Forge from https://files.minecraftforge.net/

The initial release of Forge 1.17.X is currently broken and being worked on, no manual changes to anything should be required.

First you should look into the concept of Sides, as the code you have there will crash if you attempt to use it on a server.

try removing morecfm, whatever that is

Use the full path to the java 8 executable instead of just invoking "java"

Please provide debug.log (more info on where it is and how to provide it in my signature below, just expand the spoiler)

Use one of the sites listed in my signature please, preferably Gist

1.12 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.

1.12 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.

This is exactly what the gradle wrapper(gradlew) negates the need for... gradle wrapper, not eclipse... Please provide the command as you typed it and the response you got

Delete forge-client.toml from your config folder

[14Jul2021 18:25:10.007] [Netty Client IO #3/INFO] [net.minecraftforge.fml.client.ClientHooks/CLIENTHOOKS]: Client has mods that are missing on server: [little_critters]

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

Please provide debug.log (more info on where it is and how to provide it in my signature below, just expand the spoiler)

I would suggest removing Optifine first as a test

This is true for 1.16.5 and previous, but 1.17 and forwards will likely use more updated versions of Java as they come out, which makes things a bit tricky.

The installer can't reach Mojang's servers. You're not trying to install Forge at school, are you?

Why do you seem to have renamed your server jar to craftbukkit? and why do you seem to have a mod that's designed to enhance piracy?

Each version of Forge targets a single version of Minecraft, so we have Forge versions for 1.15, Forge versions for 1.16... the first version of Forge for 1.17 is still being worked on

So you're trying to make a custom client?

Does it stop the server from running or are you worried about log spam?

I suggest you look into how to use a command line or terminal, the concept of a working directory is rather basic and necessary.

Do you have Optifine installed?