DaemonUmbra

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

What do you see if you run stty -a in a terminal?

What OS is your server running on?

You tried to use the SoundEvent during Item registration, which comes before SoundEvent registration

I've never seen this error before...please provide debug.log (more info on where it is and how to provide it in my signature below, just expand the spoiler)

You'll have to install JDK, tell eclipse where it is, and tell eclipse to use it.

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

You can get Java 8 from AdoptOpenJDK

JRE: Java Runtime Environment JDK: Java Development Kit (includes a JRE) Which one do you think you need for development?

That would be your issue then, you need Java to run Jar files.

Having Minecraft running is completely irrelevant, that's not how the system works. In fact you need to have the launcher closed or restart it for it to pick up the newly-installed Forge. Do you have Java installed?

Use Java 8 for mod dev, as it's what Mojang ships with the launcher and you don't want to accidentally use newer Java features that wouldn't work on that version. Forge itself isn't currently compatible with Java 15 anyway due to the removal of a library Forge uses.

Is this a pre-made modpack or one you made?

Heavily depends on the mods, how well made they are, and what else is running on the machine and taking up processor time

RAM doesn't really help with speed after a certain point. By better hardware I unfortunately mean a better processor.

Do you have a mods.toml in src/main/resources/META-INF?

That literally just means it crashed or otherwise stopped unexpectedly. Please provide the full log.

What launcher are you using? We've heard about this before and have been unable to reproduce it in-dev or on our own machines using Mojang's official launcher.

Have patience... we're community members doing this in our spare time and we have real-life responsibilities that must come first. This crash is from the server not ticking for a minute so the watchdog kills it. Not much I can suggest other than to get better hardware or lighten the load, try removing mods you don't need or if it's a pre-made modpack, try a different pack.

There's no such thing as Premium... you either own the game or you don't. Please provide a screenshot of your launcher.

The name(s) of one or more of your mods indicate you did not get them from a reputable source. Please visit StopModReposts to learn why this is a bad thing. That debug.log is incomplete and does not show a crash. Did the server's console mention creating a crash report or did it just go down?

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

Please provide the installer log. It will be named the same as the installer but with .log on the end: Installer: forge-<mc_version>-<forge_version>-installer.jar Log: forge-<mc_version>-<forge_version>-installer.jar.log Note: Windows hides file extensions by default, so unless you have set it to show file extensions it may show as below: Installer: forge-<mc_version>-<forge_version>-installer Log: forge-<mc_version>-<forge_version>-installer.jar

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

Do you know Java or are you trying to learn Java through modding?