Ugdhar

Search your log for DEDICATED_SERVER and remove all mods mentioned in those errors.

Just to make sure, when you updated your drivers, did you get them directly from AMD? Don't use windows update to update them.

Please read the FAQ (orange banner link at top of page) and post logs as described there to an external site (such as https://mclo.gs) and post the link here.

In that case, I would open a bug report issue with the mod author, explaining the issue you are having, and explaining that removing that mod fixes the issue.

There is no jar file for that version, you just run the .bat file What is the exact problem you are having? What are you expecting to happen when you dbl click on the .bat file? *also, please read the FAQ, and post relevant logs to an external site. Also make sure you are using the correct version of Java for 1.20.1

That server is running Fabric, and these forums are for Forge support. You would be best served looking for help wherever Fabric support is given.

That doesn't mean you can get Fabric support here lol. I mean, you might get lucky and someone that knows will answer, but your best bet is wherever Fabric support is given, probably a discord server.

Always post new logs after trying something and it doesn't work Should help narrow it down.

Looks like it's the obscureapi mod Someone also commented on their curseforge page that the same issue randomly crashes their server.

When someone asks "Does it work without <mod name>?", that usually means "Remove <mod name> and give it a try, it may be that mod (or version of that mod) causing it". If it still breaks, post new logs

These 2 mods are the same, remove one of them.

What launcher are you using? That's the weirdest log I have ever seen. Does it work if you use the official Minecraft launcher? Also, seeing this error: Caused by: joptsimple.ValueConversionException: Directory [<APPDIR>\Instances\Robot Rockin O] does not exist Which I would take as indicating the game directory doesn't exist.

I have split your reply into a separate topic, you should not just reply to someone elses problem with a "me too", especially without posting any logs or anything. You may or may not have the same issues they do, especially if you tried the posted solution in their topic, and it did not solve your problem. Please read the FAQ (orange banner at top of page) and post logs as described there to an external site such as https://mclo.gs and post a link back to it here.

Please read the FAQ (link is orange banner at top of page), and post logs as described there, to an external site such as https://mclo.gs

Please read the FAQ (Link is orange banner at top of page), and post logs as described there to an external site such as https://mclo.gs and post the link here.

There are a bunch of fabric mods listed in that log. And others as well. Try removing all that and see what happens, if it still crashes, post a new log.

Please post your settings.gradle and build.gradle files so they can be checked for errors

Thanks for sharing your solution! Always makes me sad when someone comes back to say "close this, it's solved" without sharing the solution!

Post logs as described in the FAQ (https://forums.minecraftforge.net/topic/125488-rules-and-frequently-asked-questions-faq/)

Please read the FAQ (https://forums.minecraftforge.net/topic/125488-rules-and-frequently-asked-questions-faq/) and post logs as described there to a site such as https://mclo.gs and post the link here.

Please read the FAQ (https://forums.minecraftforge.net/topic/125488-rules-and-frequently-asked-questions-faq/) and post logs as described there using a site such as https://mclo.gs and post the link to your log here.

Looks like you need to upgrade to Java 21

Please read the FAQ (https://forums.minecraftforge.net/topic/125488-rules-and-frequently-asked-questions-faq/) and post logs as described there to a site such as https://mclo.gs and post the link here.

Please read the FAQ (https://forums.minecraftforge.net/topic/125488-rules-and-frequently-asked-questions-faq/) and post logs as described there using a site like https://mclo.gs and post the link to it here. It may have the information required to solve your problem.

You should be able to browse the Minecraft source through your IDE to look at existing vanilla mobs. Been a few since I've look at much MC, so not sure what mobs would be good examples, but I know they have at least fish lol. For instance, in Eclipse, on the left side where it shows your source packages/files, there's a section for 'Referenced Libraries'. Expanding that, there's a list of jars that are used in the project. The project I'm looking at, there's one for "forge-1.20.4-49.0.38_mapped_parchment_2024.02.25-1.20.4-recomp.jar". Dropping that down shows a big list of packages, including the net.minecraft.* packages, and dropping those down show the classes included, which can be clicked on to view the source. If you use IntelliJ, it's more or less the same thing, look around for the Referenced Libraries, and find the forge one, boom, Bob's your uncle.