DaemonUmbra

According to this log the server is taking too long to tick the world so it shuts down

Try installing Java from https://adoptium.net and make sure it takes over the .jar extension. Then try again

Please provide debug.log unaltered

Why do you appear to be running the installer with the version of Java that Mojang ships with pre-1.17 versions?

Some zip managers like to take control of the .jar file extension away from Java. Make sure you have Java installed and try running Jarfix once, then try the installer again.

Are you able to open this URL in a browser? https://launcher.mojang.com/v1/objects/e4d540e0cba05a6097e885dffdf363e621f87d3f/client.txt

Ok so that's the correct site. What's are you talking about with internet explorer, it should be giving you an option to save or run the file

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

It will be in the same place as the installer and be named the same except it's a text file

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

This is not a sufficient description, I need to know the URL because there are many lookalike sites that will claim to provide Forge but instead will give you a load of adware or malware

You appear to be using Liberica Java, which we have not tested. Try switching to Eclipse Temurin or Oracle OpenJDK

You're not even sure where you got Forge from?

Please provide the full installer log

Can you provide more info about your computer, its OS, and the Java flavor you're using?

Paste is private or pending moderation

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

Try reinstalling Java I guess

I can tell you that nobody on the dev team has tested this, though you might want to know that the game runs under the javaw.exe process (or java.exe if your child is crafty enough to change that setting) and not the launcher Edit: Did a bit of testing and it looks like MFS tracks each Minecraft version separately because they start with different window titles.

The plan is for 1.16 to remain LTS, it was decided that 1.17's lifespan was too short and it was full of Mojang half-doing things

Where did you download the installer from? Please give the exact URL.

Try reinstalling Java

iirc you need to set the world type to BiomesOPlentry (BIOMESOP on servers) for its worldgen to appear

Mods need to be installed on both server and client

Was this before a MacOS update? I've learned since then that it appears to be a MacOS problem instead of an M1 hardware problem, it just so happened that the M1's were the first to get the new MacOS version