DaemonUmbra

I'm running the same version and I don't have the issue. Try a clean reinstall of Java, force it to reset the cert store Edit: Listen to Lex before you listen to me

Close but not the same.

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

Please provide your debug.log (more info in the Logs section of my signature) using one of the paste sites in my signature below.

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

Forge's latest version is actually recommended if you want the latest features and is almost never broken, when it is it tends to get fixed rather quickly. Recommended builds are just markers of "Features in this version are guaranteed to be supported until the next major update (almost always a new MInecraft Version)". Forge targets Java 8, and you should always keep Java up to date. As for the issue of double clicking on the jar not working... make sure you have Java installed and if it still doesn't work it may mean that some other program has stolen the .jar file type from Java, you can run JarFix to fix that.

That's just the same error you showed in your first post, debug.log will have A LOT more than that

I think it's because cmd and Powershell support ANSI Colors, but it's not enabled by default and apparently Log4J2's highlighter is detecting their ANSI compatibility even when it's disabled.

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

Why 1.14.2? Update to 1.14.4 at least.

Did you delete the example code from the MDK?

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

There's no bug here, just network issues. For some reason your computer is unable to resolve files.minecraftforge.net to an IP address. I'm afraid this is outside my real of expertise, and I'm wondering how you could get the installer from the files site but then your computer forgets the IP

Try removing Optifine

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

You do know that we can't see them unless you give us the link, right?

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

What happens when you double click the jar?

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

The error you posted is in Mojang code, not mod code, not much we can do there. I would suggest trying a reinstall of the JDK though.

You just run the jar, it should be executable if you have Java installed

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

The files are still there but they're there as-is, no warranty, no support. Please update to 1.14.4 or 1.15.2 to receive support.

I thought Apple liked shipping their own version of Java that they kept up to date, but here's where a lot of us get Java from.

If you haven't made any config changes, delete your config folder