A problem with my server

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    Hello comunity, I have a problem with my Aterno's server and I don't know why, I hope someone could help me, the version of the server is Forge 1.12, this is what it says the log:

    [20:27:38] [Server thread/ERROR]: Encountered an unexpected exception
    7java.lang.NullPointerException: null
    8at net.minecraftforge.fml.common.versioning.ComparableVersion.parseVersion(ComparableVersion.java:371) ~[ComparableVersion.class:?]
    9at net.minecraftforge.fml.common.versioning.ComparableVersion.<init>(ComparableVersion.java:362) ~[ComparableVersion.class:?]
    10at net.minecraftforge.fml.common.versioning.DefaultArtifactVersion.<init>(DefaultArtifactVersion.java:31) ~[DefaultArtifactVersion.class:?]
    11at net.minecraftforge.fml.common.versioning.DefaultArtifactVersion.<init>(DefaultArtifactVersion.java:42) ~[DefaultArtifactVersion.class:?]
    12at net.minecraftforge.fml.common.FMLModContainer.getProcessedVersion(FMLModContainer.java:642) ~[FMLModContainer.class:?]
    13at net.minecraftforge.fml.common.Loader.sortModList(Loader.java:235) ~[Loader.class:?]
    14at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:547) ~[Loader.class:?]
    15at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:97) ~[FMLServerHandler.class:?]
    16at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:335) ~[FMLCommonHandler.class:?]
    17at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:122) ~[nx.class:?]
    18at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:483) [MinecraftServer.class:?]
    19at java.lang.Thread.run(Thread.java:748) [?:1.8.0_282]
    20[20:27:38] [Server thread/ERROR]: This crash report has been saved to: /server/./crash-reports/crash-2021-03-28_20.27.38-server.txt

    Now I have putted 1.12.2 (14.23.5.2885) and it says an error more big xd:

    [Server thread/ERROR] [net.minecraft.server.MinecraftServer]: Encountered an unexpected exception
    2829java.lang.NoClassDefFoundError: mca/core/Localizer
    2830at java.lang.Class.getDeclaredMethods0(Native Method) ~[?:1.8.0_222]
    2831at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[?:1.8.0_222]
    2832at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[?:1.8.0_222]
    2833at net.minecraftforge.fml.common.FMLModContainer.gatherAnnotations(FMLModContainer.java:400) ~[forge.jar:?]
    2834at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:595) ~[forge.jar:?]
    2835at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source) ~[?:?]
    2836at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_222]
    2837at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_222]
    2838at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) ~[minecraft_server.1.12.2.jar:?]
    2839at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) ~[minecraft_server.1.12.2.jar:?]
    2840at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) ~[minecraft_server.1.12.2.jar:?]
    2841at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) ~[minecraft_server.1.12.2.jar:?]
    2842at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) ~[minecraft_server.1.12.2.jar:?]
    2843at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) ~[minecraft_server.1.12.2.jar:?]
    2844at com.google.common.eventbus.EventBus.post(EventBus.java:217) ~[minecraft_server.1.12.2.jar:?]
    2845at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:219) ~[forge.jar:?]
    2846at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:197) ~[forge.jar:?]
    2847at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_222]
    2848at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_222]
    2849at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_222]
    2850at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_222]
    2851at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) ~[minecraft_server.1.12.2.jar:?]
    2852at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) ~[minecraft_server.1.12.2.jar:?]
    2853at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) ~[minecraft_server.1.12.2.jar:?]
    2854at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) ~[minecraft_server.1.12.2.jar:?]
    2855at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) ~[minecraft_server.1.12.2.jar:?]
    2856at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) ~[minecraft_server.1.12.2.jar:?]
    2857at com.google.common.eventbus.EventBus.post(EventBus.java:217) ~[minecraft_server.1.12.2.jar:?]
    2858at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:136) ~[LoadController.class:?]
    2859at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:595) ~[Loader.class:?]
    2860at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98) ~[FMLServerHandler.class:?]
    2861at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333) ~[FMLCommonHandler.class:?]
    2862at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125) ~[nz.class:?]
    2863at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486) [MinecraftServer.class:?]
    2864at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
    2865Caused by: java.lang.ClassNotFoundException: mca.core.Localizer
    2866at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
    2867at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_222]
    2868at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_222]
    2869... 35 more
    2870Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@54aca26f from coremod FMLCorePlugin
    2871at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260) ~[forge.jar:?]
    2872at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
    2873at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
    2874at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_222]
    2875at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_222]
    2876... 35 more
    2877Caused by: java.lang.RuntimeException: Attempted to load class mca/core/Localizer for invalid side SERVER
    2878at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:62) ~[forge.jar:?]
    2879at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256) ~[forge.jar:?]
    2880at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
    2881at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
    2882at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_222]
    2883at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_222]
    2884... 35 more
    2885[09:19:25] [Server thread/ERROR] [net.minecraft.server.MinecraftServer]: This crash report has been saved to: /server/./crash-reports/crash-2021-03-29_09.19.25-server.txt

    Okay now it works, thx a lot but I have a last question, do all the people who going to join the server need to download all the mods or if me I have all the mods the rest of the people can play with them?

  • Toothy

    Closed the thread.