DaemonUmbra

Try updating to the latest version of Java 8. If that doesn't work, uninstall all Java versions and install the latest Java 8 again. https://adoptopenjdk.net

I don’t trust that file host that you used, please consider using Gist for larger text files

Please provide the installer log using one of the paste sites listed in the logs section of my signature below

What launcher are you using? Please provide a screenshot.

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.

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

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

Be honest with me... did you edit your error to replace 1.7.10 with 1.14.3 so your thread wouldn't be locked?

It will just crash because it's incompatible

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

Try deleting this folder: /Users/DragonTamer_KD/Library/Application Support/minecraft/libraries/net/minecraftforge/forge/1.15.2-31.1.1/ and running the installer again

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

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

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

Yes, when you ran the Forge installer did it give any kind of error?

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.

Gist's limit is just nuts, I doubt you could max that out

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

The paste appears to have expired or something, I can't view it anymore

Please provide debug.log from both server and client as described in the EAQ and my signature below

If you want support I would suggest putting your modpack on CurseForge via the Twitch client (they utilize Mojang's own client rather than a custom implementation).

You run gradlew --stop to stop all daemons, however this was a while ago and I've learned since then that there's a LOT of issues that could cause this error, and more info should be above it