Paint_Ninja

Please remove Optifine and try again - it's known to cause problems sometimes.

Unfortunately we can't see any errors in that log either. Please do the thing that causes it to crash and then share the new debug.log before starting the game again.

Can you tell us which mod so that others with the same issue can fix it too?

Update your graphics drivers, you're using an old beta version from a year ago. https://www.amd.com/en/support Install the one labelled "WHQL Recommended". Avoid "Optional" drivers as they are beta versions.

This is the Minecraft Forge forum, we do not support Fabric here

hexerei-0.2.2.jar is broken. Check for updates and report the issue to the mod author if already on the latest version.

A mod is trying to load a client-only class on a dedicated server, where said class doesn't exist. Check your mods folder and remove any client-only ones, such as Rubidium Extras and BetterFPS (among others)

What launcher are you using?

Please note that "error code 1" only means "it crashed", with error code 0 meaning "game closed without crashing". To help diagnose your issue we need your debug.log in full, found in %AppData%\.minecraft\logs\ . Please put it on pastebin.com and provide a link These can be safely ignored, it's not an error. From top to bottom, this is saying "found the mod loader", "found the java mod support", "found the lowcode mod support (think global datapacks)", "found the game". JarJar is the name for Forge's jar-in-jar system. Basically, mods can embed dependencies and libraries inside their mod jar. These log messages are saying it already found the required deps as normal jars and will be using those instead of embedded ones, nothing to worry about. This isn't part of Forge. We need your debug.log to be able to assist you further.

Sorry to hear you're having performance issues with Forge. To troubleshoot the issue, we need more details: 1. Please take screenshots of your Options -> Video Settings on Forge, Vanilla and Fabric and indicate which is which. This is to make sure the comparison is fair, because obviously if your graphics settings are a lot higher on your Forge install than the others, it'll run slower. 2. Please take a screenshot of the display tab dxdiag. You can do this by pressing Win + R on your keyboard, put "dxdiag" and press enter. If it asks about checking if your drivers are digitally signed, click yes. Finally, click the display tab. 3. We need the debug.log, found in the logs folder. You can find the logs folder in the same place as where the resourcepacks or mods folders are.

Oculus cannot be installed on servers, remove it from server-side. Note that you can still have it installed on clients that join this server.

The Tumbleweed mod is causing the crash

I've written a fairly comprehensive troubleshooting guide that goes over solutions for the root cause of this issue here. IPv6 support was added because when it works, it usually decreases your ping time as you have a more direct connection to the server with less intermediary processing through NAT hops. As such, disabling IPv6 should be treated as a last resort solution as it'll likely increase your ping time to capable servers, increase lag and break some Vanilla networking features such as connecting to IPv6-only servers.

Try some of the solutions on this page: Troubleshooting login errors in Forge - Support & Bug Reports - Forge Forums (minecraftforge.net)

Try some of the solutions on this page

Ya no se ofrece ayuda para las versiones 1.17 y anteriores. Pero en tu caso, prueba 1.16.5

1.16.5 is EOL, but it seems like randompatches is causing the issue.

If you're having trouble with joining servers or sharing to LAN, this thread should help by providing some solutions for common causes. This is my first time writing a comprehensive troubleshooting guide on this forum so if you have any feedback please let me know. 1. Hosts file What's a hosts file and why should I care? How do I fix it? How do I know if this worked? Repeat the steps above and check if the changes you made to the file have applied. 2. DNS What's DNS and why should I care? How do I fix it? How do I know if this worked? Go to https://1.1.1.1/help and it should say you're connected to 1.1.1.1. If it doesn't, open PowerShell, run `Clear-DnsClientCache`, reboot and try again. 3. Firewall What's a firewall and why should I care? How do I fix it? 4. Launchers and Java Why would this matter and how do I fix it? 5. VPNs and proxies If you're using a VPN or proxy, it might be blocking certain traffic. Try disabling it and see if it fixes the issue. 6. General router settings (I'm sorry if you've gotten this far and still having trouble.) What's a router? How do I fix it? 7. Adapter settings What's an adapter and why should I care? How do I fix it? 8. Antivirus If you're using a third-party antivirus (not Windows Defender), it might be blocking certain traffic. Try disabling it and see if it fixes the issue. If it does, add an exception for Minecraft and Forge. Contact your antivirus provider for further help with this. 9. Docker For server owners, if you're using Docker, it might be worth trying to explicitly enable IPv6 support. This is usually done by adding `--sysctl net.ipv6.conf.all.disable_ipv6=0` to the `docker run` command. Another thing you can try is adding AAAA records for your server's domain name to point to the IPv6 address of your server, assuming everything else IPv6-related is already working of course. Also refer to the Firewall section above - it's very important that if you block IPv6 for some reason, that you do it for both incoming and outgoing traffic and not just one direction. 10. Finale If, after everything here, you're still having trouble that only seems to affect Forge, please ping me (Paint_Ninja#6054) in #squirrels on the Forge Discord server so I can find out what's going on and why it's happening. I wrote the PRs that added full dual-stack networking support to Forge and want to make sure I've covered all bases. While I did extensive testing, there's always the possibility I missed something that only affects a small number of users. This applies to anyone having trouble - players, server owners, launcher devs...