Crash report on inicializating server

[a.gonsvec]

Here is my crash report:

 

---- Minecraft Crash Report ----

WARNING: coremods are present:
  SpongeCoremod (spongeforge-1.12.2-2838-7.2.4-RC4073.jar)
Contact their authors BEFORE contacting forge

// Shall we play a game?

Time: 27-08-20 9:53
Description: Exception in server tick loop

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from DoubleJump (doublejump)
Caused by: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: cloud/zeroprox/doublejumpmixins/event/ToggleFlyEvent
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2215)
    at com.google.common.cache.LocalCache.get(LocalCache.java:4154)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:4158)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:5147)
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:5153)
    at com.google.inject.internal.FailableCache.get(FailableCache.java:54)
    at com.google.inject.internal.ConstructorInjectorStore.get(ConstructorInjectorStore.java:49)
    at com.google.inject.internal.ConstructorBindingImpl.initialize(ConstructorBindingImpl.java:155)
    at com.google.inject.internal.InjectorImpl.initializeBinding(InjectorImpl.java:592)
    at com.google.inject.internal.AbstractBindingProcessor$Processor.initializeBinding(AbstractBindingProcessor.java:173)
    at com.google.inject.internal.AbstractBindingProcessor$Processor.lambda$scheduleInitialization$0(AbstractBindingProcessor.java:160)
    at com.google.inject.internal.ProcessedBindingData.initializeBindings(ProcessedBindingData.java:49)
    at com.google.inject.internal.InternalInjectorCreator.initializeStatically(InternalInjectorCreator.java:124)
    at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:108)
    at com.google.inject.internal.InjectorImpl.createChildInjector(InjectorImpl.java:246)
    at com.google.inject.internal.InjectorImpl.createChildInjector(InjectorImpl.java:251)
    at org.spongepowered.mod.plugin.SpongeModPluginContainer.constructMod(SpongeModPluginContainer.java:282)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:219)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:197)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.redirect$zza000$forgeImpl$PostEvent(LoadController.java:568)
    at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:136)
    at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:593)
    at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98)
    at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
    at java.lang.Thread.run(Unknown Source)
Caused by: com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: cloud/zeroprox/doublejumpmixins/event/ToggleFlyEvent
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2215)
    at com.google.common.cache.LocalCache.get(LocalCache.java:4154)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:4158)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:5147)
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:5153)
    at com.google.inject.internal.FailableCache.get(FailableCache.java:54)
    at com.google.inject.internal.MembersInjectorStore.get(MembersInjectorStore.java:69)
    at com.google.inject.internal.ConstructorInjectorStore.createConstructor(ConstructorInjectorStore.java:75)
    at com.google.inject.internal.ConstructorInjectorStore.access$000(ConstructorInjectorStore.java:30)
    at com.google.inject.internal.ConstructorInjectorStore$1.create(ConstructorInjectorStore.java:38)
    at com.google.inject.internal.ConstructorInjectorStore$1.create(ConstructorInjectorStore.java:34)
    at com.google.inject.internal.FailableCache$1.load(FailableCache.java:43)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3716)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2424)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2298)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2211)
    ... 48 more
Caused by: java.lang.NoClassDefFoundError: cloud/zeroprox/doublejumpmixins/event/ToggleFlyEvent
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
    at java.lang.Class.getDeclaredMethods(Unknown Source)
    at com.google.inject.internal.DeclaredMembers.getDeclaredMethods(DeclaredMembers.java:40)
    at com.google.inject.spi.InjectionPoint.getDeclaredMethods(InjectionPoint.java:757)
    at com.google.inject.spi.InjectionPoint.getInjectionPoints(InjectionPoint.java:676)
    at com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:376)
    at com.google.inject.internal.MembersInjectorStore.createWithListeners(MembersInjectorStore.java:92)
    at com.google.inject.internal.MembersInjectorStore.access$000(MembersInjectorStore.java:40)
    at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:49)
    at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:45)
    at com.google.inject.internal.FailableCache$1.load(FailableCache.java:43)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3716)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2424)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2298)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2211)
    ... 63 more
Caused by: java.lang.ClassNotFoundException: cloud.zeroprox.doublejumpmixins.event.ToggleFlyEvent
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 79 more
Caused by: java.lang.NullPointerException

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
    at net.minecraft.server.MinecraftServer.handler$zjg000$onCrashReport(MinecraftServer.java:4687)

-- Sponge PhaseTracker --
Details:
    Phase Stack: [Empty stack]
Stacktrace:
    at net.minecraft.server.MinecraftServer.handler$zjg000$onCrashReport(MinecraftServer.java:4687)
    at net.minecraft.server.MinecraftServer.func_71230_b(MinecraftServer.java:889)
    at net.minecraft.server.dedicated.DedicatedServer.func_71230_b(DedicatedServer.java:371)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:558)
    at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_261, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1697911104 bytes (1619 MB) / 2040528896 bytes (1946 MB) up to 2040528896 bytes (1946 MB)
    JVM Flags: 2 total; -Xmx2048M -Xms2048M
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.42 Powered by Forge 14.23.5.2838 29 mods loaded, 29 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    Mods:

    | State | ID          | Version                  | Source                                   | Signature                                |
    |:----- |:----------- |:------------------------ |:---------------------------------------- |:---------------------------------------- |
    | LC    | minecraft   | 1.12.2                   | minecraft.jar                            | None                                     |
    | LC    | mcp         | 9.42                     | minecraft.jar                            | None                                     |
    | LC    | FML         | 8.0.99.99                | forge-1.12.2-14.23.5.2838-universal.jar  | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LC    | forge       | 14.23.5.2838             | forge-1.12.2-14.23.5.2838-universal.jar  | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LC    | spongeapi   | 7.2.0-04ac09134          | spongeforge-1.12.2-2838-7.2.4-RC4073.jar | None                                     |
    | LC    | sponge      | 1.12.2-7.2.4-SNAPSHOT    | spongeforge-1.12.2-2838-7.2.4-RC4073.jar | None                                     |
    | LC    | spongeforge | 1.12.2-2838-7.2.4-RC4073 | spongeforge-1.12.2-2838-7.2.4-RC4073.jar | None                                     |
    | L     | powermoney  | 1.7.2.230                | PowerMoney-1.12.2-1.7.2.230.jar          | None                                     |

    Plugins:

    | State | ID             | Version            | Source                              | Signature |
    |:----- |:-------------- |:------------------ |:----------------------------------- |:--------- |
    | LC    | authentic      | 1.4.1              | Authentic-1.4.1.jar                 | None      |
    | LC    | blockyarena    | 0.6.0              | blockyarena-0.6.0.jar               | None      |
    | LC    | commandsigns   | 2.10               | commandsigns-2.10.jar               | None      |
    | LC    | placeholderapi | 4.4                | PlaceholderAPI-4.4.jar              | None      |
    | LC    | gwm_library    | 2.5.4              | GWMLibrary 2.5.4.jar                | None      |
    | LC    | cosmetics      | 1.5.2              | Cosmetics 1.5.2.jar                 | None      |
    | LE    | doublejump     | 1.5                | DoubleJump-1.5.jar                  | None      |
    | L     | gameparkour    | 1.0                | GameParkour-1.0.jar                 | None      |
    | L     | gamespleef     | 1.4                | GameSpleef-1.4.jar                  | None      |
    | L     | langswitch     | 1.6.1              | LangSwitch-1.6.1.jar                | None      |
    | L     | luckperms      | 5.1.93             | LuckPerms-Sponge-5.1.93.jar         | None      |
    | L     | megamenus      | 0.7                | MegaMenus-0.7.jar                   | None      |
    | L     | minesweeper    | 0.4                | Minesweeper-0.4.jar                 | None      |
    | L     | nations        | 2.11-S7.0-MC1.12.1 | Nations-2.11-S7.0-MC1.12.1.jar      | None      |
    | L     | pjc            | 0.3.0              | projectcore-7.2.0-0.3.0.jar         | None      |
    | L     | pji            | 0.12.2             | projectinventories-7.2.0-0.12.2.jar | None      |
    | L     | pjp            | 0.15.2             | projectportals-7.2.0-0.15.2.jar     | None      |
    | L     | pjw            | 0.13.1             | projectworlds-7.2.0-0.13.1.jar      | None      |
    | L     | rankupper      | 4.0.5              | RankUpper-4.0.5-b28-Universal.jar   | None      |
    | L     | simplechat     | 0.6.0              | simplechat-6.1.0-0.6.0.jar          | None      |
    | L     | vshop          | 2.7                | VillagerShops-2.7.jar               | None      |

    Loaded coremods (and transformers): 
SpongeCoremod (spongeforge-1.12.2-2838-7.2.4-RC4073.jar)
  org.spongepowered.common.launch.transformer.SpongeSuperclassTransformer
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'fml,forge,sponge'
    Type: Dedicated Server (map_server.txt)

 

[a.gonsvec]

1 minute ago, a.gonsvec said:

Here is my crash report:

 

---- Minecraft Crash Report ----

WARNING: coremods are present:
  SpongeCoremod (spongeforge-1.12.2-2838-7.2.4-RC4073.jar)
Contact their authors BEFORE contacting forge

// Shall we play a game?

Time: 27-08-20 9:53
Description: Exception in server tick loop

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from DoubleJump (doublejump)
Caused by: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: cloud/zeroprox/doublejumpmixins/event/ToggleFlyEvent
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2215)
    at com.google.common.cache.LocalCache.get(LocalCache.java:4154)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:4158)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:5147)
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:5153)
    at com.google.inject.internal.FailableCache.get(FailableCache.java:54)
    at com.google.inject.internal.ConstructorInjectorStore.get(ConstructorInjectorStore.java:49)
    at com.google.inject.internal.ConstructorBindingImpl.initialize(ConstructorBindingImpl.java:155)
    at com.google.inject.internal.InjectorImpl.initializeBinding(InjectorImpl.java:592)
    at com.google.inject.internal.AbstractBindingProcessor$Processor.initializeBinding(AbstractBindingProcessor.java:173)
    at com.google.inject.internal.AbstractBindingProcessor$Processor.lambda$scheduleInitialization$0(AbstractBindingProcessor.java:160)
    at com.google.inject.internal.ProcessedBindingData.initializeBindings(ProcessedBindingData.java:49)
    at com.google.inject.internal.InternalInjectorCreator.initializeStatically(InternalInjectorCreator.java:124)
    at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:108)
    at com.google.inject.internal.InjectorImpl.createChildInjector(InjectorImpl.java:246)
    at com.google.inject.internal.InjectorImpl.createChildInjector(InjectorImpl.java:251)
    at org.spongepowered.mod.plugin.SpongeModPluginContainer.constructMod(SpongeModPluginContainer.java:282)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:219)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:197)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.redirect$zza000$forgeImpl$PostEvent(LoadController.java:568)
    at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:136)
    at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:593)
    at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98)
    at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
    at java.lang.Thread.run(Unknown Source)
Caused by: com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: cloud/zeroprox/doublejumpmixins/event/ToggleFlyEvent
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2215)
    at com.google.common.cache.LocalCache.get(LocalCache.java:4154)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:4158)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:5147)
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:5153)
    at com.google.inject.internal.FailableCache.get(FailableCache.java:54)
    at com.google.inject.internal.MembersInjectorStore.get(MembersInjectorStore.java:69)
    at com.google.inject.internal.ConstructorInjectorStore.createConstructor(ConstructorInjectorStore.java:75)
    at com.google.inject.internal.ConstructorInjectorStore.access$000(ConstructorInjectorStore.java:30)
    at com.google.inject.internal.ConstructorInjectorStore$1.create(ConstructorInjectorStore.java:38)
    at com.google.inject.internal.ConstructorInjectorStore$1.create(ConstructorInjectorStore.java:34)
    at com.google.inject.internal.FailableCache$1.load(FailableCache.java:43)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3716)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2424)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2298)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2211)
    ... 48 more
Caused by: java.lang.NoClassDefFoundError: cloud/zeroprox/doublejumpmixins/event/ToggleFlyEvent
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
    at java.lang.Class.getDeclaredMethods(Unknown Source)
    at com.google.inject.internal.DeclaredMembers.getDeclaredMethods(DeclaredMembers.java:40)
    at com.google.inject.spi.InjectionPoint.getDeclaredMethods(InjectionPoint.java:757)
    at com.google.inject.spi.InjectionPoint.getInjectionPoints(InjectionPoint.java:676)
    at com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:376)
    at com.google.inject.internal.MembersInjectorStore.createWithListeners(MembersInjectorStore.java:92)
    at com.google.inject.internal.MembersInjectorStore.access$000(MembersInjectorStore.java:40)
    at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:49)
    at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:45)
    at com.google.inject.internal.FailableCache$1.load(FailableCache.java:43)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3716)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2424)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2298)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2211)
    ... 63 more
Caused by: java.lang.ClassNotFoundException: cloud.zeroprox.doublejumpmixins.event.ToggleFlyEvent
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 79 more
Caused by: java.lang.NullPointerException

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
    at net.minecraft.server.MinecraftServer.handler$zjg000$onCrashReport(MinecraftServer.java:4687)

-- Sponge PhaseTracker --
Details:
    Phase Stack: [Empty stack]
Stacktrace:
    at net.minecraft.server.MinecraftServer.handler$zjg000$onCrashReport(MinecraftServer.java:4687)
    at net.minecraft.server.MinecraftServer.func_71230_b(MinecraftServer.java:889)
    at net.minecraft.server.dedicated.DedicatedServer.func_71230_b(DedicatedServer.java:371)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:558)
    at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_261, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1697911104 bytes (1619 MB) / 2040528896 bytes (1946 MB) up to 2040528896 bytes (1946 MB)
    JVM Flags: 2 total; -Xmx2048M -Xms2048M
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.42 Powered by Forge 14.23.5.2838 29 mods loaded, 29 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    Mods:

    | State | ID          | Version                  | Source                                   | Signature                                |
    |:----- |:----------- |:------------------------ |:---------------------------------------- |:---------------------------------------- |
    | LC    | minecraft   | 1.12.2                   | minecraft.jar                            | None                                     |
    | LC    | mcp         | 9.42                     | minecraft.jar                            | None                                     |
    | LC    | FML         | 8.0.99.99                | forge-1.12.2-14.23.5.2838-universal.jar  | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LC    | forge       | 14.23.5.2838             | forge-1.12.2-14.23.5.2838-universal.jar  | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LC    | spongeapi   | 7.2.0-04ac09134          | spongeforge-1.12.2-2838-7.2.4-RC4073.jar | None                                     |
    | LC    | sponge      | 1.12.2-7.2.4-SNAPSHOT    | spongeforge-1.12.2-2838-7.2.4-RC4073.jar | None                                     |
    | LC    | spongeforge | 1.12.2-2838-7.2.4-RC4073 | spongeforge-1.12.2-2838-7.2.4-RC4073.jar | None                                     |
    | L     | powermoney  | 1.7.2.230                | PowerMoney-1.12.2-1.7.2.230.jar          | None                                     |

    Plugins:

    | State | ID             | Version            | Source                              | Signature |
    |:----- |:-------------- |:------------------ |:----------------------------------- |:--------- |
    | LC    | authentic      | 1.4.1              | Authentic-1.4.1.jar                 | None      |
    | LC    | blockyarena    | 0.6.0              | blockyarena-0.6.0.jar               | None      |
    | LC    | commandsigns   | 2.10               | commandsigns-2.10.jar               | None      |
    | LC    | placeholderapi | 4.4                | PlaceholderAPI-4.4.jar              | None      |
    | LC    | gwm_library    | 2.5.4              | GWMLibrary 2.5.4.jar                | None      |
    | LC    | cosmetics      | 1.5.2              | Cosmetics 1.5.2.jar                 | None      |
    | LE    | doublejump     | 1.5                | DoubleJump-1.5.jar                  | None      |
    | L     | gameparkour    | 1.0                | GameParkour-1.0.jar                 | None      |
    | L     | gamespleef     | 1.4                | GameSpleef-1.4.jar                  | None      |
    | L     | langswitch     | 1.6.1              | LangSwitch-1.6.1.jar                | None      |
    | L     | luckperms      | 5.1.93             | LuckPerms-Sponge-5.1.93.jar         | None      |
    | L     | megamenus      | 0.7                | MegaMenus-0.7.jar                   | None      |
    | L     | minesweeper    | 0.4                | Minesweeper-0.4.jar                 | None      |
    | L     | nations        | 2.11-S7.0-MC1.12.1 | Nations-2.11-S7.0-MC1.12.1.jar      | None      |
    | L     | pjc            | 0.3.0              | projectcore-7.2.0-0.3.0.jar         | None      |
    | L     | pji            | 0.12.2             | projectinventories-7.2.0-0.12.2.jar | None      |
    | L     | pjp            | 0.15.2             | projectportals-7.2.0-0.15.2.jar     | None      |
    | L     | pjw            | 0.13.1             | projectworlds-7.2.0-0.13.1.jar      | None      |
    | L     | rankupper      | 4.0.5              | RankUpper-4.0.5-b28-Universal.jar   | None      |
    | L     | simplechat     | 0.6.0              | simplechat-6.1.0-0.6.0.jar          | None      |
    | L     | vshop          | 2.7                | VillagerShops-2.7.jar               | None      |

    Loaded coremods (and transformers): 
SpongeCoremod (spongeforge-1.12.2-2838-7.2.4-RC4073.jar)
  org.spongepowered.common.launch.transformer.SpongeSuperclassTransformer
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'fml,forge,sponge'
    Type: Dedicated Server (map_server.txt)

 

The server has sponge and forge, with some plugins. PLEASE, I NEED HELP