[17:12:56] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 31.1.18, --fml.mcpVersion, 20200122.131323, --fml.mcVersion, 1.15.2, --fml.forgeGroup, net.minecraftforge, nogui]
[17:12:56] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 5.0.0-milestone.4+67+b1a340b starting: java version 13 by Oracle Corporation
[17:12:56] [main/INFO] [ne.mi.fm.lo.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[17:12:56] [main/WARN] [ne.mi.fm.lo.FMLConfig/CORE]: Configuration file /spigot/forgeserver/config/fml.toml is not correct. Correcting
[17:12:56] [main/WARN] [ne.mi.fm.lo.FMLConfig/CORE]: Incorrect key [defaultConfigPath] was corrected from null to defaultconfigs
[17:12:57] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[17:12:58] [main/INFO] [cp.mo.mo.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlserver' with arguments [--gameDir, ., nogui]
[17:12:59] [main/ERROR] [minecraft/PropertyManager]: Failed to load properties from file: server.properties
[17:13:00] [main/WARN] [minecraft/ServerEula]: Failed to load eula.txt
[17:13:00] [main/INFO] [minecraft/MinecraftServer]: You need to agree to the EULA in order to run the server. Go to eula.txt for more info.
spigotadmin@v2201911106768100853:/spigot/forgeserver$ sh start.sh
[17:13:12] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 31.1.18, --fml.mcpVersion, 20200122.131323, --fml.mcVersion, 1.15.2, --fml.forgeGroup, net.minecraftforge, nogui]
[17:13:12] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 5.0.0-milestone.4+67+b1a340b starting: java version 13 by Oracle Corporation
[17:13:12] [main/INFO] [ne.mi.fm.lo.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[17:13:13] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[17:13:14] [main/INFO] [cp.mo.mo.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlserver' with arguments [--gameDir, ., nogui]
[17:13:15] [main/INFO] [minecraft/MinecraftServer]: You need to agree to the EULA in order to run the server. Go to eula.txt for more info.
spigotadmin@v2201911106768100853:/spigot/forgeserver$ sh start.sh
[17:13:34] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 31.1.18, --fml.mcpVersion, 20200122.131323, --fml.mcVersion, 1.15.2, --fml.forgeGroup, net.minecraftforge, nogui]
[17:13:34] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 5.0.0-milestone.4+67+b1a340b starting: java version 13 by Oracle Corporation
[17:13:34] [main/INFO] [ne.mi.fm.lo.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[17:13:35] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[17:13:36] [main/INFO] [cp.mo.mo.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlserver' with arguments [--gameDir, ., nogui]
[17:13:53] [main/WARN] [minecraft/Commands]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[17:13:53] [main/WARN] [minecraft/Commands]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[17:13:53] [main/WARN] [minecraft/Commands]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[17:13:53] [main/WARN] [minecraft/Commands]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[17:13:53] [main/WARN] [minecraft/Commands]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[17:13:53] [Server thread/INFO] [minecraft/DedicatedServer]: Starting minecraft server version 1.15.2
[17:13:54] [Server thread/ERROR] [ne.mi.ev.EventBus/EVENTBUS]: Failed to resolve handler for "net.minecraftforge.fml.network.simple.SimpleChannel$$Lambda$2741/0x00000008013ed040@4f82b5fa"
[17:13:54] [Server thread/ERROR] [minecraft/MinecraftServer]: Encountered an unexpected exception
java.lang.ExceptionInInitializerError: null
        at net.minecraftforge.fml.ModLoader.<init>(ModLoader.java:121) ~[?:?] {re:classloading}
        at net.minecraftforge.fml.ModLoader.get(ModLoader.java:146) ~[?:?] {re:classloading}
        at net.minecraftforge.fml.server.ServerModLoader.begin(ServerModLoader.java:45) ~[?:?] {re:classloading}
        at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:122) ~[?:?] {re:classloading,pl:accesstransformer:B}
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:613) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
        at java.lang.Thread.run(Thread.java:830) [?:?] {}
Caused by: java.lang.IllegalStateException: Failed to resolve consumer event type: net.minecraftforge.fml.network.simple.SimpleChannel$$Lambda$2741/0x00000008013ed040@4f82b5fa
        at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:194) ~[eventbus-2.0.0-milestone.1-service.jar:?] {}
        at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:161) ~[eventbus-2.0.0-milestone.1-service.jar:?] {}
        at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:156) ~[eventbus-2.0.0-milestone.1-service.jar:?] {}
        at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:151) ~[eventbus-2.0.0-milestone.1-service.jar:?] {}
        at net.minecraftforge.fml.network.NetworkInstance.addListener(NetworkInstance.java:65) ~[?:?] {re:classloading}
        at net.minecraftforge.fml.network.simple.SimpleChannel.<init>(SimpleChannel.java:57) ~[?:?] {re:classloading}
        at net.minecraftforge.fml.network.simple.SimpleChannel.<init>(SimpleChannel.java:50) ~[?:?] {re:classloading}
        at net.minecraftforge.fml.network.NetworkRegistry$ChannelBuilder.simpleChannel(NetworkRegistry.java:409) ~[?:?] {re:classloading}
        at net.minecraftforge.fml.network.NetworkInitialization.getHandshakeChannel(NetworkInitialization.java:38) ~[?:?] {re:classloading}
        at net.minecraftforge.fml.network.FMLNetworkConstants.<clinit>(FMLNetworkConstants.java:48) ~[?:?] {re:classloading}
        ... 6 more
[17:13:54] [Server thread/ERROR] [minecraft/MinecraftServer]: This crash report has been saved to: /spigot/forgeserver/./crash-reports/crash-2020-03-05_17.13.54-server.txt
[17:13:54] [Server thread/INFO] [minecraft/MinecraftServer]: Stopping server
[17:13:54] [Server thread/INFO] [minecraft/MinecraftServer]: Saving worlds
[17:13:54] [Server thread/ERROR] [minecraft/MinecraftServer]: Exception stopping the server
java.lang.IllegalArgumentException: Can not hotload overworld. This must be loaded at all times by main Server.
        at org.apache.commons.lang3.Validate.isTrue(Validate.java:158) ~[server-1.15.2-extra.jar:?] {}
        at net.minecraftforge.common.DimensionManager.initWorld(DimensionManager.java:229) ~[?:?] {re:classloading}
        at net.minecraftforge.common.DimensionManager.getWorld(DimensionManager.java:198) ~[?:?] {re:classloading}
        at net.minecraft.server.MinecraftServer.func_71218_a(MinecraftServer.java:1004) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
        at net.minecraft.server.MinecraftServer.func_213211_a(MinecraftServer.java:536) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
        at net.minecraft.server.MinecraftServer.func_71260_j(MinecraftServer.java:568) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
        at net.minecraft.server.dedicated.DedicatedServer.func_71260_j(DedicatedServer.java:549) ~[?:?] {re:classloading,pl:accesstransformer:B}
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:676) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
        at java.lang.Thread.run(Thread.java:830) [?:?] {}

I'm having this when trying to use java 12, what version of java should I be on? 

 

Debug.log

 

Spoiler

[20Apr.2020 16:20:22.263] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 31.1.47, --fml.mcpVersion, 20200414.225201, --fml.mcVersion, 1.15.2, --fml.forgeGroup, net.minecraftforge, nogui]
[20Apr.2020 16:20:22.267] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 5.0.0-milestone.4+67+b1a340b starting: java version 12.0.2 by Oracle Corporation
[20Apr.2020 16:20:22.281] [main/DEBUG] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Found launch services [minecraft,testharness,fmlclient,fmlserver]
[20Apr.2020 16:20:22.294] [main/DEBUG] [cpw.mods.modlauncher.NameMappingServiceHandler/MODLAUNCHER]: Found naming services : []
[20Apr.2020 16:20:22.311] [main/DEBUG] [cpw.mods.modlauncher.LaunchPluginHandler/MODLAUNCHER]: Found launch plugins: [eventbus,object_holder_definalize,runtime_enum_extender,capability_inject_definalize,accesstransformer,runtimedistcleaner]
[20Apr.2020 16:20:22.320] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Discovering transformation services
[20Apr.2020 16:20:22.330] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Found additional transformation services from discovery services: []
[20Apr.2020 16:20:22.355] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Found transformer services : [fml]
[20Apr.2020 16:20:22.355] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Transformation services loading
[20Apr.2020 16:20:22.356] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Loading service fml
[20Apr.2020 16:20:22.356] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/]: Injecting tracing printstreams for STDOUT/STDERR.
[20Apr.2020 16:20:22.361] [main/DEBUG] [net.minecraftforge.fml.loading.LauncherVersion/CORE]: Found FMLLauncher version 31.1
[20Apr.2020 16:20:22.362] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML 31.1 loading
[20Apr.2020 16:20:22.362] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML found ModLauncher version : 5.0.0-milestone.4+67+b1a340b
[20Apr.2020 16:20:22.362] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Initializing modjar URL handler
[20Apr.2020 16:20:22.363] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML found AccessTransformer version : 2.0.4+53+c61c33c
[20Apr.2020 16:20:22.363] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML found EventBus version : 2.0.0-milestone.1+57+de55078
[20Apr.2020 16:20:22.364] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Found Runtime Dist Cleaner
[20Apr.2020 16:20:22.368] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML found CoreMod version : 2.0.0-milestone.1+5+5b32e68
[20Apr.2020 16:20:22.368] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Found ForgeSPI package implementation version 2.0.0-milestone.1+7+a2eaa64
[20Apr.2020 16:20:22.368] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Found ForgeSPI package specification 3
[20Apr.2020 16:20:22.671] [main/INFO] [net.minecraftforge.fml.loading.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[20Apr.2020 16:20:22.672] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Loaded service fml
[20Apr.2020 16:20:22.673] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Configuring option handling for services
[20Apr.2020 16:20:22.682] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Transformation services initializing
[20Apr.2020 16:20:22.682] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initializing transformation service fml
[20Apr.2020 16:20:22.683] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Setting up basic FML game directories
[20Apr.2020 16:20:22.684] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Found existing GAMEDIR directory : C:\Users\mikak\Desktop\Minecraft
[20Apr.2020 16:20:22.685] [main/DEBUG] [net.minecraftforge.fml.loading.FMLPaths/CORE]: Path GAMEDIR is C:\Users\mikak\Desktop\Minecraft
[20Apr.2020 16:20:22.685] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Making MODSDIR directory : C:\Users\mikak\Desktop\Minecraft\mods
[20Apr.2020 16:20:22.686] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Created MODSDIR directory : C:\Users\mikak\Desktop\Minecraft\mods
[20Apr.2020 16:20:22.686] [main/DEBUG] [net.minecraftforge.fml.loading.FMLPaths/CORE]: Path MODSDIR is C:\Users\mikak\Desktop\Minecraft\mods
[20Apr.2020 16:20:22.686] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Making CONFIGDIR directory : C:\Users\mikak\Desktop\Minecraft\config
[20Apr.2020 16:20:22.686] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Created CONFIGDIR directory : C:\Users\mikak\Desktop\Minecraft\config
[20Apr.2020 16:20:22.687] [main/DEBUG] [net.minecraftforge.fml.loading.FMLPaths/CORE]: Path CONFIGDIR is C:\Users\mikak\Desktop\Minecraft\config
[20Apr.2020 16:20:22.687] [main/DEBUG] [net.minecraftforge.fml.loading.FMLPaths/CORE]: Path FMLCONFIG is C:\Users\mikak\Desktop\Minecraft\config\fml.toml
[20Apr.2020 16:20:22.687] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Loading configuration
[20Apr.2020 16:20:22.719] [main/WARN] [net.minecraftforge.fml.loading.FMLConfig/CORE]: Configuration file C:\Users\mikak\Desktop\Minecraft\config\fml.toml is not correct. Correcting
[20Apr.2020 16:20:22.726] [main/WARN] [net.minecraftforge.fml.loading.FMLConfig/CORE]: Incorrect key [defaultConfigPath] was corrected from null to defaultconfigs
[20Apr.2020 16:20:22.734] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Making default config directory directory : C:\Users\mikak\Desktop\Minecraft\defaultconfigs
[20Apr.2020 16:20:22.735] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Created default config directory directory : C:\Users\mikak\Desktop\Minecraft\defaultconfigs
[20Apr.2020 16:20:22.735] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Preparing launch handler
[20Apr.2020 16:20:22.735] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Using fmlserver as launch service
[20Apr.2020 16:20:22.741] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Received command line version data  : MC Version: '1.15.2' MCP Version: '20200414.225201' Forge Version: '31.1.47' Forge group: 'net.minecraftforge'
[20Apr.2020 16:20:22.743] [main/DEBUG] [net.minecraftforge.fml.loading.LibraryFinder/CORE]: Found JAR asm at path C:\Users\mikak\Desktop\Minecraft\libraries\org\ow2\asm\asm\7.2\asm-7.2.jar
[20Apr.2020 16:20:22.743] [main/DEBUG] [net.minecraftforge.fml.loading.LibraryFinder/CORE]: Found probable library path C:\Users\mikak\Desktop\Minecraft\libraries
[20Apr.2020 16:20:22.743] [main/DEBUG] [net.minecraftforge.fml.loading.LibraryFinder/CORE]: Found forge path C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraftforge\forge\1.15.2-31.1.47\forge-1.15.2-31.1.47-universal.jar is present
[20Apr.2020 16:20:22.744] [main/DEBUG] [net.minecraftforge.fml.loading.LibraryFinder/CORE]: SRG MC at C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraft\server\1.15.2-20200414.225201\server-1.15.2-20200414.225201-srg.jar is present
[20Apr.2020 16:20:22.744] [main/DEBUG] [net.minecraftforge.fml.loading.LibraryFinder/CORE]: MC Extras at C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraft\server\1.15.2\server-1.15.2-extra.jar is present
[20Apr.2020 16:20:22.744] [main/DEBUG] [net.minecraftforge.fml.loading.LibraryFinder/CORE]: Forge patches at C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraftforge\forge\1.15.2-31.1.47\forge-1.15.2-31.1.47-server.jar is present
[20Apr.2020 16:20:22.747] [main/DEBUG] [net.minecraftforge.fml.loading.LanguageLoadingProvider/CORE]: Found 0 language providers
[20Apr.2020 16:20:22.748] [main/DEBUG] [net.minecraftforge.fml.loading.LanguageLoadingProvider/CORE]: Adding forge as a language from C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraftforge\forge\1.15.2-31.1.47\forge-1.15.2-31.1.47-universal.jar
[20Apr.2020 16:20:22.750] [main/DEBUG] [net.minecraftforge.fml.loading.LanguageLoadingProvider/CORE]: Adding file:/C:/Users/mikak/Desktop/Minecraft/libraries/net/minecraftforge/forge/1.15.2-31.1.47/forge-1.15.2-31.1.47-universal.jar to languageloader classloader
[20Apr.2020 16:20:22.788] [main/DEBUG] [net.minecraftforge.fml.loading.LanguageLoadingProvider/CORE]: Found 2 language providers
[20Apr.2020 16:20:22.788] [main/DEBUG] [net.minecraftforge.fml.loading.LanguageLoadingProvider/CORE]: Found language provider javafml, version 31.1
[20Apr.2020 16:20:22.792] [main/DEBUG] [net.minecraftforge.fml.loading.LanguageLoadingProvider/CORE]: Found language provider minecraft, version 1
[20Apr.2020 16:20:22.795] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initialized transformation service fml
[20Apr.2020 16:20:22.795] [main/DEBUG] [cpw.mods.modlauncher.NameMappingServiceHandler/MODLAUNCHER]: Current naming domain is 'srg'
[20Apr.2020 16:20:22.796] [main/DEBUG] [cpw.mods.modlauncher.NameMappingServiceHandler/MODLAUNCHER]: Identified name mapping providers {}
[20Apr.2020 16:20:22.796] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Transformation services begin scanning
[20Apr.2020 16:20:22.797] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Beginning scan trigger - transformation service fml
[20Apr.2020 16:20:22.797] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Initiating mod scan
[20Apr.2020 16:20:22.820] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModListHandler/CORE]: Found mod coordinates from lists: []
[20Apr.2020 16:20:22.841] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/CORE]: Found Mod Locators : (mods folder:null),(maven libs:null),(exploded directory:null),(minecraft:null)
[20Apr.2020 16:20:22.858] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Considering mod file candidate C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraftforge\forge\1.15.2-31.1.47\forge-1.15.2-31.1.47-universal.jar
[20Apr.2020 16:20:22.892] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModFileInfo/LOADING]: Found valid mod file forge-1.15.2-31.1.47-universal.jar with {forge} mods - versions {31.1.47}
[20Apr.2020 16:20:22.892] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModFile/LOADING]: Loading mod file C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraftforge\forge\1.15.2-31.1.47\forge-1.15.2-31.1.47-universal.jar with language javafml
[20Apr.2020 16:20:22.916] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Found coremod fieldtomethodtransformers with Javascript path META-INF/fieldtomethodtransformers.js
[20Apr.2020 16:20:22.917] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModFile/LOADING]: Found coremod META-INF/fieldtomethodtransformers.js
[20Apr.2020 16:20:22.917] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Considering mod file candidate C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraftforge\forge\1.15.2-31.1.47\forge-1.15.2-31.1.47-server.jar
[20Apr.2020 16:20:22.922] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModFileInfo/LOADING]: Found valid mod file forge-1.15.2-31.1.47-server.jar with {minecraft} mods - versions {1.15.2}
[20Apr.2020 16:20:22.922] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModFile/LOADING]: Loading mod file C:\Users\mikak\Desktop\Minecraft\libraries\net\minecraftforge\forge\1.15.2-31.1.47\forge-1.15.2-31.1.47-server.jar with language minecraft
[20Apr.2020 16:20:22.929] [main/DEBUG] [net.minecraftforge.fml.loading.ModSorter/LOADING]: Found 0 mandatory requirements
[20Apr.2020 16:20:22.930] [main/DEBUG] [net.minecraftforge.fml.loading.ModSorter/LOADING]: Found 0 mandatory mod requirements missing
[20Apr.2020 16:20:23.037] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[20Apr.2020 16:20:23.330] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: End scan trigger - transformation service fml
[20Apr.2020 16:20:23.331] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Transformation services loading transformers
[20Apr.2020 16:20:23.333] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initializing transformers for transformation service fml
[20Apr.2020 16:20:23.333] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Loading coremod transformers
[20Apr.2020 16:20:23.334] [main/DEBUG] [net.minecraftforge.coremod.CoreModEngine/COREMOD]: Loading CoreMod from META-INF/fieldtomethodtransformers.js
[20Apr.2020 16:20:23.541] [main/DEBUG] [net.minecraftforge.coremod.CoreModEngine/COREMOD]: CoreMod loaded successfully
[20Apr.2020 16:20:23.556] [main/DEBUG] [cpw.mods.modlauncher.TransformStore/MODLAUNCHER]: Adding transformer net.minecraftforge.coremod.transformer.CoreModClassTransformer@54534abf to Target : CLASS {Lnet/minecraft/potion/EffectInstance;} {} {V}
[20Apr.2020 16:20:23.558] [main/DEBUG] [cpw.mods.modlauncher.TransformStore/MODLAUNCHER]: Adding transformer net.minecraftforge.coremod.transformer.CoreModClassTransformer@667e34b1 to Target : CLASS {Lnet/minecraft/block/FlowingFluidBlock;} {} {V}
[20Apr.2020 16:20:23.559] [main/DEBUG] [cpw.mods.modlauncher.TransformStore/MODLAUNCHER]: Adding transformer net.minecraftforge.coremod.transformer.CoreModClassTransformer@1c6e0a08 to Target : CLASS {Lnet/minecraft/item/BucketItem;} {} {V}
[20Apr.2020 16:20:23.559] [main/DEBUG] [cpw.mods.modlauncher.TransformStore/MODLAUNCHER]: Adding transformer net.minecraftforge.coremod.transformer.CoreModClassTransformer@6dba847b to Target : CLASS {Lnet/minecraft/block/StairsBlock;} {} {V}
[20Apr.2020 16:20:23.560] [main/DEBUG] [cpw.mods.modlauncher.TransformStore/MODLAUNCHER]: Adding transformer net.minecraftforge.coremod.transformer.CoreModClassTransformer@1efdcd5 to Target : CLASS {Lnet/minecraft/block/FlowerPotBlock;} {} {V}
[20Apr.2020 16:20:23.560] [main/DEBUG] [cpw.mods.modlauncher.TransformStore/MODLAUNCHER]: Adding transformer net.minecraftforge.coremod.transformer.CoreModClassTransformer@1623bbe5 to Target : CLASS {Lnet/minecraft/item/FishBucketItem;} {} {V}
[20Apr.2020 16:20:23.561] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initialized transformers for transformation service fml
[20Apr.2020 16:20:23.583] [main/INFO] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlserver' with arguments [--gameDir, ., nogui]
[20Apr.2020 16:20:24.334] [main/ERROR] [net.minecraft.server.dedicated.PropertyManager/]: Failed to load properties from file: server.properties
[20Apr.2020 16:20:25.443] [main/DEBUG] [net.minecraftforge.coremod.transformer.CoreModBaseTransformer/COREMOD]: Transforming net/minecraft/block/FlowingFluidBlock
[20Apr.2020 16:20:25.664] [main/DEBUG] [net.minecraftforge.coremod.transformer.CoreModBaseTransformer/COREMOD]: Transforming net/minecraft/block/StairsBlock
[20Apr.2020 16:20:25.824] [main/DEBUG] [net.minecraftforge.coremod.transformer.CoreModBaseTransformer/COREMOD]: Transforming net/minecraft/block/FlowerPotBlock
[20Apr.2020 16:20:30.122] [main/DEBUG] [net.minecraftforge.coremod.transformer.CoreModBaseTransformer/COREMOD]: Transforming net/minecraft/item/BucketItem
[20Apr.2020 16:20:30.161] [main/DEBUG] [net.minecraftforge.coremod.transformer.CoreModBaseTransformer/COREMOD]: Transforming net/minecraft/item/FishBucketItem
[20Apr.2020 16:20:30.338] [main/DEBUG] [net.minecraftforge.coremod.transformer.CoreModBaseTransformer/COREMOD]: Transforming net/minecraft/potion/EffectInstance
[20Apr.2020 16:20:32.550] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[20Apr.2020 16:20:32.553] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[20Apr.2020 16:20:32.557] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[20Apr.2020 16:20:32.560] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[20Apr.2020 16:20:32.563] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[20Apr.2020 16:20:32.653] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: Starting minecraft server version 1.15.2
[20Apr.2020 16:20:32.751] [Server thread/DEBUG] [net.minecraftforge.fml.ForgeI18n/CORE]: Loading I18N data entries: 4533
[20Apr.2020 16:20:32.880] [Server thread/ERROR] [net.minecraftforge.eventbus.EventBus/EVENTBUS]: Failed to resolve handler for "net.minecraftforge.fml.network.simple.SimpleChannel$$Lambda$2652/0x0000000801a5e840@6bf5b75d"
[20Apr.2020 16:20:32.881] [Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: Encountered an unexpected exception
java.lang.ExceptionInInitializerError: null
    at net.minecraftforge.fml.ModLoader.<init>(ModLoader.java:121) ~[?:?]
    at net.minecraftforge.fml.ModLoader.get(ModLoader.java:146) ~[?:?]
    at net.minecraftforge.fml.server.ServerModLoader.begin(ServerModLoader.java:45) ~[?:?]
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:122) ~[?:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:613) [?:?]
    at java.lang.Thread.run(Thread.java:835) [?:?]
Caused by: java.lang.IllegalStateException: Failed to resolve consumer event type: net.minecraftforge.fml.network.simple.SimpleChannel$$Lambda$2652/0x0000000801a5e840@6bf5b75d
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:194) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:161) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:156) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:151) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.fml.network.NetworkInstance.addListener(NetworkInstance.java:65) ~[?:?]
    at net.minecraftforge.fml.network.simple.SimpleChannel.<init>(SimpleChannel.java:57) ~[?:?]
    at net.minecraftforge.fml.network.simple.SimpleChannel.<init>(SimpleChannel.java:50) ~[?:?]
    at net.minecraftforge.fml.network.NetworkRegistry$ChannelBuilder.simpleChannel(NetworkRegistry.java:409) ~[?:?]
    at net.minecraftforge.fml.network.NetworkInitialization.getHandshakeChannel(NetworkInitialization.java:38) ~[?:?]
    at net.minecraftforge.fml.network.FMLNetworkConstants.<clinit>(FMLNetworkConstants.java:48) ~[?:?]
    ... 6 more
[20Apr.2020 16:20:32.900] [Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: This crash report has been saved to: C:\Users\mikak\Desktop\Minecraft\.\crash-reports\crash-2020-04-20_16.20.32-server.txt
[20Apr.2020 16:20:32.943] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Stopping server
[20Apr.2020 16:20:32.944] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving worlds
[20Apr.2020 16:20:32.950] [Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: Exception stopping the server
java.lang.IllegalArgumentException: Can not hotload overworld. This must be loaded at all times by main Server.
    at org.apache.commons.lang3.Validate.isTrue(Validate.java:158) ~[server-1.15.2-extra.jar:?]
    at net.minecraftforge.common.DimensionManager.initWorld(DimensionManager.java:229) ~[?:?]
    at net.minecraftforge.common.DimensionManager.getWorld(DimensionManager.java:198) ~[?:?]
    at net.minecraft.server.MinecraftServer.func_71218_a(MinecraftServer.java:1004) ~[?:?]
    at net.minecraft.server.MinecraftServer.func_213211_a(MinecraftServer.java:536) ~[?:?]
    at net.minecraft.server.MinecraftServer.func_71260_j(MinecraftServer.java:568) ~[?:?]
    at net.minecraft.server.dedicated.DedicatedServer.func_71260_j(DedicatedServer.java:550) ~[?:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:676) [?:?]
    at java.lang.Thread.run(Thread.java:835) [?:?]