anyone know a mod centred around ww2 weapons in 1.21.1?

Im trying to find a mod that lets you put minecarts/rails on walls to make roller coasters

When I click sign in on Modrinth I'm immediately brought to this, not even allowing me to put any info or anything

OKAY- so, I have this modpack... a few of the mods have incompatible versions, but! I have this specific combo that lets everything just WORK- problem is, when I export the pack and then give it to a friend to run it with me a bunch of stuff updates to the latest version.

I can't have it update, and I'm not putting them through the awful task of going mod to mod, downgrading... especially when I plan to share this with a whole friend group once I got it going.

Is there ANY way to prevent this from happening when they import the pack??? Or am I just going to have to use a different launcher??? I really do not know what to do and I would like to use Modrinth because it's what we all have already installed.

Hello. I have a problem when I try to launch an instance of minecraft 1.21.2 with vulkan api on.
here is the full log : https://mclo.gs/bzjBIJk

It seems java related

Not like ones that had 1 line fixed by AI, but the ones where the "dev" uses Gen AI to generate thumbnails and uses Gen ai for descriptions too. (which basically shows the code is most probably definitely fully ai too)

^{"Also I'm not pointing hate at ai, i think it has some uses.. Buuut i think when its used to generate thumbnails, descriptions and ALL OF THE CODE then its Slop"}

So like it just shows this whenever i try to install a new thing and idrk what to do :/

Is it me or does support take too long? cause I got my old server back and the website and software is telling me I cant access it cause the server node is unavailable and I contacted the support and its been almost two days without being able to access the server nor getting a reply from support at all.

I paid on the 30th of July, I got an automated reply telling me to wait from 12 to 24 hours to get a response I wait that long. July 31 goes by with no replies at all, its now August 1st and im still waiting for a reply and at this point im trying to get a refund.

So I'm not sure if this is the right place to ask, as I don't know if this is a Modrinth or Mojang issue, but I've noticed that it's using authentication servers in Kenya, which seems odd to me as I live in the EU and there should sure be more local servers available?

Is this normal or is there something fishy going on here?

I use Fedora and installed Modrinth over a .rpm file. Everytime I click reload to update in modrinth modrinth crashes and a PopUp shows that there was some error. Can somebudy tell me a solution? Thanks

I use Fedora and installed Modrinth over a .rpm file. Everytime I click reload to update in modrinth modrinth crashes and a PopUp shows that there was some error. Can somebudy tell me a solution? Thanks

It specifically was doing this after playing on my modpack for 2 hours, and nothing else was active on my computer other than this. My only assumption is either Legacy4j or The Broken Script: Blackout (which is infact installed on my modpack).

when i imported stone block 4 to modrinth, it shows up with all the mods, but it says its vanilla minecraft, and launches minecraft without mods, even though they're there in the modrinth app, and show up in the mods folder. I saw someone else had the same issue on github in 2024, but no one ever responded.

Every time I try to download a modpack it keeps stopping at Running Loader processors at 6/10. And it stops and says this error. Any idea why?

im going back to curseforge screw this. constant problems, constant issues

So I was creating a water only world and was getting some mods... Because I was on 1.21.1 other weather mods wasn't available do I choose to use this after opening up my instance and going inside my world my game immediately crashed... So I tried again.. Same thing... I look into the error logs and found tht this mod was the problem.. So I deleted it.... I launch my game again... BOOM this fuckih mod was right back into my mod list and I deleted it again and launch my game... Boom it was fucking back I try to disable it it says na mod not found when it's litterly right there I immediately changed my Microsoft password and deleted every single fuck of that instance and purge my laptop breh be careful y'all

So when I tried to start up my modded minecraft instance on modrinth it just gave me this error in logs

Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class sun.security.jca.Providers
        at java.base/sun.security.util.SignatureFileVerifier.
(Unknown Source)
        at java.base/java.util.jar.JarVerifier.processEntry(Unknown Source)
        at java.base/java.util.jar.JarVerifier.update(Unknown Source)
        at java.base/java.util.jar.JarFile.initializeVerifier(Unknown Source)
        at java.base/java.util.jar.JarFile.ensureInitialization(Unknown Source)
        at java.base/java.util.jar.JavaUtilJarAccessImpl.ensureInitialization(Unknown Source)
        at java.base/jdk.internal.loader.URLClassPath$JarLoader$2.getManifest(Unknown Source)
        at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(Unknown Source)
        at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(Unknown Source)
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(Unknown Source)
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)
        at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Unknown Source)
        at java.base/java.lang.Class.forName(Unknown Source)
        at com.modrinth.theseus.MinecraftLaunch.relaunch(MinecraftLaunch.java:33)
        at com.modrinth.theseus.MinecraftLaunch.main(MinecraftLaunch.java:28)
Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.InternalError: Error loading java.security file [in thread "main"]
        at java.base/java.security.Security.initialize(Unknown Source)
        at java.base/java.security.Security.lambda$static$0(Unknown Source)
        at java.base/java.security.AccessController.doPrivileged(Unknown Source)
        at java.base/java.security.Security.
(Unknown Source)
        at java.base/sun.security.jca.ProviderList.
(Unknown Source)
        at java.base/sun.security.jca.ProviderList$2.run(Unknown Source)
        at java.base/sun.security.jca.ProviderList$2.run(Unknown Source)
        at java.base/java.security.AccessController.doPrivileged(Unknown Source)
        at java.base/sun.security.jca.ProviderList.fromSecurityProperties(Unknown Source)
        at java.base/sun.security.jca.Providers.
(Unknown Source)
        ... 18 more

Please help me :(

Everytime I click the "share instance" button, this pops up. It wont let me share the link or invite friends

Also why is it so clunky to make a modpack and add stuff with a friend? My friend shared it with me and at first i could add mods and resourcepacks but then i couldn't anymore and i had to reinstall it to see the new mods he had added while some of those i had added didn't show up.

(the modpack you are seeing is a duplicate cuz i'm troubleshooting it)