Crashes when loading on dedicated server

Stacktrace:
    at net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:57) ~[fmlloader-1.20.1-47.2.19.jar%2369!/:1.0] {}
-- MOD curiosbackslot --
Details:
    Mod File: /C:/Users/User/Desktop/server/mods/curiosbackslot-4.0.4-nc.jar
    Failure message: CuriosBackSlot (curiosbackslot) has failed to load correctly
        java.lang.RuntimeException: Attempted to load class net/minecraft/client/Options for invalid dist DEDICATED_SERVER
    Mod Version: 4.0.4-nc
    Mod Issue URL: NOT PROVIDED
    Exception message: java.lang.RuntimeException: Attempted to load class net/minecraft/client/Options for invalid dist DEDICATED_SERVER
Stacktrace:
    at net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:57) ~[fmlloader-1.20.1-47.2.19.jar%2369!/:1.0] {}
    at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:88) ~[modlauncher-10.0.9.jar%2355!/:?] {}
    at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) ~[modlauncher-10.0.9.jar%2355!/:?] {}
    at cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50) ~[modlauncher-10.0.9.jar%2355!/:?] {}
    at cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:113) ~[securejarhandler-2.1.10.jar:?] {}
    at cpw.mods.cl.ModuleClassLoader.lambda$findClass$15(ModuleClassLoader.java:219) ~[securejarhandler-2.1.10.jar:?] {}
    at cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:229) ~[securejarhandler-2.1.10.jar:?] {}
    at cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:219) ~[securejarhandler-2.1.10.jar:?] {}
    at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:135) ~[securejarhandler-2.1.10.jar:?] {}
    at java.lang.ClassLoader.loadClass(ClassLoader.java:525) ~[?:?] {}
    at java.lang.Class.getDeclaredConstructors0(Native Method) ~[?:?] {re:mixin}
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:3373) ~[?:?] {re:mixin}
    at java.lang.Class.getConstructor0(Class.java:3578) ~[?:?] {re:mixin}
    at java.lang.Class.getConstructor(Class.java:2271) ~[?:?] {re:mixin}
    at net.minecraftforge.eventbus.api.EventListenerHelper.computeListenerList(EventListenerHelper.java:75) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.api.EventListenerHelper.lambda$getListenerListInternal$0(EventListenerHelper.java:56) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.LockHelper.computeIfAbsent(LockHelper.java:61) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.LockHelper.get(LockHelper.java:44) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.LockHelper.computeIfAbsent(LockHelper.java:39) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.api.EventListenerHelper.getListenerListInternal(EventListenerHelper.java:56) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.api.EventListenerHelper.getListenerList(EventListenerHelper.java:50) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.EventBus.addToListeners(EventBus.java:276) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:252) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:244) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:199) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:193) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:187) ~[eventbus-6.0.5.jar%2352!/:?] {}
    at com.kermitemperor.curiosbackslot.CuriosBackSlot.<init>(CuriosBackSlot.java:39) ~[curiosbackslot-4.0.4-nc.jar%23420!/:4.0.4-nc] {re:classloading,pl:runtimedistcleaner:A}
    at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?] {}
    at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77) ~[?:?] {}
    at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?] {}
    at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {}
    at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?] {}
    at net.minecraftforge.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:70) ~[javafmllanguage-1.20.1-47.2.19.jar%23613!/:?] {}
    at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:124) ~[fmlcore-1.20.1-47.2.19.jar%23612!/:?] {}
    at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {}
    at java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[?:?] {}
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?] {}
    at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?] {}
    at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?] {re:mixin,re:computing_frames}
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?] {re:mixin,re:computing_frames}
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?] {re:mixin}
KermitEmperor / CuriosBackSlot

Crashes when loading on dedicated server #1
