18:41:19 | Failed to load class net.coderbot.iris.Irisjava.lang.RuntimeException: Attempted to load class net/minecraft/client/gui/screen/Screen for invalid dist DEDICATED_SERVER

    at net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:57) ~[forge-1.16.5-36.2.42.jar:36.2] {}

    at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:85) ~[modlauncher-8.1.3.jar:?] {}

    at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) ~[modlauncher-8.1.3.jar:?] {}

    at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:265) ~[modlauncher-8.1.3.jar:?] {}

    at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136) ~[modlauncher-8.1.3.jar:?] {re:classloading}

    at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98) ~[modlauncher-8.1.3.jar:?] {re:classloading}

    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_411] {}

    at java.lang.Class.forName0(Native Method) ~[?:1.8.0_411] {}

    at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_411] {}

    at net.minecraftforge.fml.javafmlmod.FMLModContainer.<init>(FMLModContainer.java:47) ~[forge:36.2] {re:classloading}

    at sun.reflect.GeneratedConstructorAccessor32.newInstance(Unknown Source) ~[?:?] {}

    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_411] {}

    at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_411] {}

    at net.minecraftforge.fml.javafmlmod.FMLJavaModLanguageProvider$FMLModTarget.loadMod(FMLJavaModLanguageProvider.java:62) ~[forge:36.2] {re:classloading}

    at net.minecraftforge.fml.ModLoader.buildModContainerFromTOML(ModLoader.java:288) ~[forge:?] {re:classloading}

    at net.minecraftforge.fml.ModLoader.lambda$buildMods$29(ModLoader.java:267) ~[forge:?] {re:classloading}

    at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.HashMap$EntrySpliterator.forEachRemaining(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.AbstractPipeline.copyInto(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.AbstractPipeline.evaluate(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.ReferencePipeline.collect(Unknown Source) ~[?:1.8.0_411] {}

    at net.minecraftforge.fml.ModLoader.buildMods(ModLoader.java:269) ~[forge:?] {re:classloading}

    at net.minecraftforge.fml.ModLoader.lambda$gatherAndInitializeMods$11(ModLoader.java:169) ~[forge:?] {re:classloading}

    at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.AbstractPipeline.copyInto(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.AbstractPipeline.evaluate(Unknown Source) ~[?:1.8.0_411] {}

    at java.util.stream.ReferencePipeline.collect(Unknown Source) ~[?:1.8.0_411] {}

    at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:171) ~[forge:?] {re:classloading}

    at net.minecraftforge.fml.server.ServerModLoader.load(ServerModLoader.java:30) ~[forge:?] {re:classloading}

    at net.minecraft.server.Main.main(Main.java:95) ~[?:?] {re:classloading}

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_411] {}

    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_411] {}

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_411] {}

    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_411] {}

    at net.minecraftforge.fml.loading.FMLServerLaunchProvider.lambda$launchService$0(FMLServerLaunchProvider.java:37) ~[forge-1.16.5-36.2.42.jar:36.2] {}

    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.1.3.jar:?] {}

    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.1.3.jar:?] {}

    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.1.3.jar:?] {}

    at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.1.3.jar:?] {}

    at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.1.3.jar:?] {}

    at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:49) [forge-1.16.5-36.2.42.jar:?] {}

    at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:46) [forge-1.16.5-36.2.42.jar:?] {}

    at net.minecraftforge.server.ServerMain.main(ServerMain.java:43) [forge-1.16.5-36.2.42.jar:?] {}

이런게 뜨는데 어떻게 하나요?