Hi, everyone and thanks for your attention.
My problem is that when I log in to my server it restarts, and in the console this comes out:

[19:56:04] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Is the server overloaded? Running 4836ms or 96 ticks behind

[19:56:07] [Server thread/ERROR] [ne.mi.fm.lo.RuntimeDistCleaner/DISTXFORM]: Attempted to load class net/minecraft/client/Minecraft for invalid dist DEDICATED_SERVER

[19:56:07] [Server thread/ERROR] [ne.mi.ev.EventBus/EVENTBUS]: Exception caught during firing event: Attempted to load class net/minecraft/client/Minecraft for invalid dist DEDICATED_SERVER

        Index: 2

        Listeners:

                0: HIGHEST

                1: net.minecraftforge.eventbus.EventBus$$Lambda/0x00007f2eccafd700@7ed6262e

                2: ASM: com.dplayend.justleveling.registry.RegistryCommonEvents@24a273e7 onAttackEntity(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                3: HIGH

                4: ASM: dev.shadowsoffire.attributeslib.impl.AttributeEvents@59a96f29 apothCriticalStrike(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                5: NORMAL

                6: ASM: com.bobmowzie.mowziesmobs.server.ServerEventHandler@31d74a8d onLivingHurt(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                7: ASM: com.bobmowzie.mowziesmobs.server.ability.AbilityCommonEventHandler@18ccbfc8 onTakeDamage(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                8: ASM: class com.aetherteam.aether.event.listeners.abilities.WeaponAbilityListener onDartHurt(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                9: ASM: class net.mcreator.callofyucutan.procedures.EntityIsHurtProcedure onEntityAttacked(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                10: ASM: class io.github.edwinmindcraft.apoli.common.ApoliPowerEventHandler onLivingHurt(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                11: ASM: class net.mcreator.sonsofsins.procedures.InstinctHurtProcedure onEntityAttacked(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                12: ASM: class net.mcreator.sonsofsins.procedures.DamagesHurtProcedure onEntityAttacked(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                13: ASM: class net.mcreator.sonsofsins.procedures.DamageCancelPuppetProcedure onEntityAttacked(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                14: ASM: class vectorwing.farmersdelight.common.item.enchantment.BackstabbingEnchantment$BackstabbingEvent onKnifeBackstab(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                15: ASM: com.github.L_Ender.cataclysm.event.ServerEventHandler@7e9c5157 onLivingDamage(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                16: ASM: class twilightforest.events.ToolEvents onKnightmetalToolDamage(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                17: ASM: class twilightforest.events.ToolEvents onMinotaurAxeCharge(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                18: ASM: class twilightforest.events.EntityEvents entityHurts(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                19: ASM: class twilightforest.events.EntityEvents onLivingHurtEvent(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                20: ASM: class net.alshanex.originsoverhaulmod.event.ModEvents$ForgeEvents onLivingHurt(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                21: ASM: class io.redspace.ironsspellbooks.effect.EchoingStrikesEffect createEcho(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                22: ASM: class com.oblivioussp.spartanweaponry.event.CommonEventHandler onLivingHurt(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                23: ASM: class net.arphex.procedures.SpiderShieldProcedure onEntityAttacked(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                24: net.minecraftforge.eventbus.EventBus$$Lambda/0x00007f2eccafd700@14152969

                25: net.minecraftforge.eventbus.EventBus$$Lambda/0x00007f2eccafd700@4f50bf14

                26: ASM: class net.BKTeam.illagerrevolutionmod.Events hurtEntity(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                27: ASM: com.github.alexthe666.iceandfire.event.ServerEvents@74f2d766 onEntityDamage(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                28: LOWEST

                29: ASM: class io.github.edwinmindcraft.apoli.common.ApoliPowerEventHandler livingDamage(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                30: ASM: class net.merchantpug.apugli.ApugliForgeEventHandler onLivingHurt(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

                31: ASM: dev.shadowsoffire.attributeslib.impl.AttributeEvents@59a96f29 lifeStealOverheal(Lnet/minecraftforge/event/entity/living/LivingHurtEvent;)V

java.lang.RuntimeException: Attempted to load class net/minecraft/client/Minecraft for invalid dist DEDICATED_SERVER

        at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:57)

        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:88)

        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120)

        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50)

        at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:113)

        at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.lambda$findClass$15(ModuleClassLoader.java:219)

        at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:229)

        at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:219)

        at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:135)

        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)

        at TRANSFORMER/[email protected]/net.minecraftforge.network.simple.SimpleChannel.sendToServer(SimpleChannel.java:87)

        at TRANSFORMER/[email protected]/com.dplayend.justleveling.network.ServerNetworking.sendToServer(ServerNetworking.java:36)

        at TRANSFORMER/[email protected]/com.dplayend.justleveling.network.packet.common.CounterAttackSP.send(CounterAttackSP.java:51)

        at TRANSFORMER/[email protected]/com.dplayend.justleveling.registry.RegistryCommonEvents.lambda$onAttackEntity$8(RegistryCommonEvents.java:315)

        at TRANSFORMER/[email protected]/net.minecraftforge.common.util.LazyOptional.ifPresent(LazyOptional.java:137)

        at TRANSFORMER/[email protected]/com.dplayend.justleveling.registry.RegistryCommonEvents.onAttackEntity(RegistryCommonEvents.java:315)

        at TRANSFORMER/[email protected]/com.dplayend.justleveling.registry.__RegistryCommonEvents_onAttackEntity_LivingHurtEvent.invoke(.dynamic)

        at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:73)

        at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.post(EventBus.java:315)

        at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.post(EventBus.java:296)

        at TRANSFORMER/[email protected]/net.minecraftforge.common.ForgeHooks.onLivingHurt(ForgeHooks.java:292)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.player.Player.m_6475_(Player.java:909)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.LivingEntity.m_6469_(LivingEntity.java:1112)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.player.Player.m_6469_(Player.java:840)

        at TRANSFORMER/[email protected]/net.minecraft.server.level.ServerPlayer.m_6469_(ServerPlayer.java:695)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.ai.behavior.warden.SonicBoom.m_217701_(SonicBoom.java:87)

        at java.base/java.util.Optional.ifPresent(Optional.java:178)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.ai.behavior.warden.SonicBoom.m_6725_(SonicBoom.java:74)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.ai.behavior.warden.SonicBoom.m_6725_(SonicBoom.java:19)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.ai.behavior.Behavior.m_22558_(Behavior.java:66)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.ai.Brain.m_21963_(Brain.java:445)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.ai.Brain.m_21865_(Brain.java:390)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.monster.warden.Warden.m_8024_(Warden.java:311)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.Mob.m_6140_(Mob.java:768)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.LivingEntity.m_8107_(LivingEntity.java:2548)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.Mob.m_8107_(Mob.java:536)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.monster.Monster.m_8107_(Monster.java:42)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.LivingEntity.m_8119_(LivingEntity.java:2298)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.Mob.m_8119_(Mob.java:337)

        at TRANSFORMER/[email protected]/net.minecraft.world.entity.monster.warden.Warden.m_8119_(Warden.java:278)

        at TRANSFORMER/[email protected]/net.minecraft.server.level.ServerLevel.m_8647_(ServerLevel.java:694)

        at TRANSFORMER/[email protected]/net.minecraft.world.level.Level.m_46653_(Level.java:479)

        at TRANSFORMER/[email protected]/net.minecraft.server.level.ServerLevel.m_184063_(ServerLevel.java:343)

        at TRANSFORMER/[email protected]/net.minecraft.world.level.entity.EntityTickList.m_156910_(EntityTickList.java:54)

        at TRANSFORMER/[email protected]/net.minecraft.server.level.ServerLevel.m_8793_(ServerLevel.java:323)

        at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:893)

        at TRANSFORMER/[email protected]/net.minecraft.server.dedicated.DedicatedServer.m_5703_(DedicatedServer.java:283)

        at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:814)

        at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661)

        at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251)

        at java.base/java.lang.Thread.run(Thread.java:1583)

[19:56:07] [Server thread/ERROR] [minecraft/MinecraftServer]: Encountered an unexpected exception

net.minecraft.ReportedException: Ticking entity

        at net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:897) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}

        at net.minecraft.server.dedicated.DedicatedServer.m_5703_(DedicatedServer.java:283) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:lionfishapi.mixins.json:DedicatedServerMixin,pl:mixin:A}

        at net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:814) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}

        at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}

        at net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}

        at java.lang.Thread.run(Thread.java:1583) ~[?:?] {}

Caused by: java.lang.RuntimeException: Attempted to load class net/minecraft/client/Minecraft for invalid dist DEDICATED_SERVER

        at net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:57) ~[fmlloader-1.20.1-47.4.0.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:526) ~[?:?] {}

        at net.minecraftforge.network.simple.SimpleChannel.sendToServer(SimpleChannel.java:87) ~[forge-1.20.1-47.4.0-universal.jar%23240!/:?] {re:mixin,re:classloading}

        at com.dplayend.justleveling.network.ServerNetworking.sendToServer(ServerNetworking.java:36) ~[justleveling-forge-1.20.x-v1.7.jar%23203!/:forge-1.20.x-v1.7] {re:classloading}

        at com.dplayend.justleveling.network.packet.common.CounterAttackSP.send(CounterAttackSP.java:51) ~[justleveling-forge-1.20.x-v1.7.jar%23203!/:forge-1.20.x-v1.7] {re:classloading}

        at com.dplayend.justleveling.registry.RegistryCommonEvents.lambda$onAttackEntity$8(RegistryCommonEvents.java:315) ~[justleveling-forge-1.20.x-v1.7.jar%23203!/:forge-1.20.x-v1.7] {re:classloading}

        at net.minecraftforge.common.util.LazyOptional.ifPresent(LazyOptional.java:137) ~[forge-1.20.1-47.4.0-universal.jar%23240!/:?] {re:mixin,re:classloading}

        at com.dplayend.justleveling.registry.RegistryCommonEvents.onAttackEntity(RegistryCommonEvents.java:315) ~[justleveling-forge-1.20.x-v1.7.jar%23203!/:forge-1.20.x-v1.7] {re:classloading}

        at com.dplayend.justleveling.registry.__RegistryCommonEvents_onAttackEntity_LivingHurtEvent.invoke(.dynamic) ~[justleveling-forge-1.20.x-v1.7.jar%23203!/:forge-1.20.x-v1.7] {re:classloading,pl:eventbus:B}

        at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:73) ~[eventbus-6.0.5.jar%2352!/:?] {}

        at net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) ~[eventbus-6.0.5.jar%2352!/:?] {}

        at net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) ~[eventbus-6.0.5.jar%2352!/:?] {}

        at net.minecraftforge.common.ForgeHooks.onLivingHurt(ForgeHooks.java:292) ~[forge-1.20.1-47.4.0-universal.jar%23240!/:?] {re:mixin,re:classloading,pl:mixin:APP:revive_me.mixins.json:ForgeHooksMixin,pl:mixin:APP:apoli.mixins.json:forge.ForgeHooksMixin,pl:mixin:A}

        at net.minecraft.world.entity.player.Player.m_6475_(Player.java:909) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:pehkui.mixins.json:reach.PlayerEntityMixin,pl:mixin:APP:additionalentityattributes.mixins.json:common.DigSpeedMixin,pl:mixin:APP:additionalentityattributes.mixins.json:common.PlayerEntityMixin,pl:mixin:APP:aether.mixins.json:common.PlayerMixin,pl:mixin:APP:aether.mixins.json:common.accessor.PlayerAccessor,pl:mixin:APP:pehkui.mixins.json:PlayerEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat117plus.PlayerEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1194plus.PlayerEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1201minus.EntityVehicleHeightOffsetMixin,pl:mixin:APP:pehkui.mixins.json:compat1204minus.PlayerEntityMixin,pl:mixin:APP:apoli.mixins.json:PlayerEntityMixin,pl:mixin:APP:apoli.mixins.json:forge.PlayerMixin,pl:mixin:APP:carryon.mixins.json:PlayerMixin,pl:mixin:APP:paraglider.mixins.json:MixinPlayer,pl:mixin:APP:friendsandfoes-common.mixins.json:PlayerEntityMixin,pl:mixin:APP:bettercombat.mixins.json:PlayerEntityAccessor,pl:mixin:APP:bettercombat.mixins.json:PlayerEntityMixin,pl:mixin:APP:justleveling.mixins.json:MixPlayer,pl:mixin:APP:origins.mixins.json:NoCobwebSlowdownMixin,pl:mixin:APP:origins.mixins.json:WaterBreathingMixin$UpdateAir,pl:mixin:APP:apugli.mixins.json:common.PlayerEntityMixin,pl:mixin:APP:origins_classes.mixins.json:common.minecraft.PlayerMixin,pl:mixin:APP:parcool.mixins.json:common.PlayerMixin,pl:mixin:APP:mixins.irons_spellbooks.json:PlayerMixin,pl:mixin:APP:attributeslib.mixins.json:PlayerMixin,pl:mixin:APP:spartanweaponry.mixins.json:PlayerMixin,pl:mixin:APP:medievalorigins.forge.mixins.json:compat.iceandfire.PlayerMixin,pl:mixin:A}

        at net.minecraft.world.entity.LivingEntity.m_6469_(LivingEntity.java:1112) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:computing_frames,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:additionalentityattributes.mixins.json:common.LivingEntityMixin,pl:mixin:APP:aether.mixins.json:common.LivingEntityMixin,pl:mixin:APP:aether.mixins.json:common.accessor.LivingEntityAccessor,pl:mixin:APP:pehkui.mixins.json:LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat117plus.LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1194plus.LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1204minus.LivingEntityMixin,pl:mixin:APP:caelus.mixins.json:MixinLivingEntity,pl:mixin:APP:apoli.mixins.json:LivingEntityMixin,pl:mixin:APP:citadel.mixins.json:LivingEntityMixin,pl:mixin:APP:mixins.bosses_of_mass_destruction.json:LivingEntityMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:BlazeLivingEntityMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:LivingEntityMixin,pl:mixin:APP:bettercombat.mixins.json:LivingEntityAccessor,pl:mixin:APP:bettercombat.mixins.json:LivingEntityMixin,pl:mixin:APP:justleveling.mixins.json:MixLivingEntity,pl:mixin:APP:cataclysm.mixins.json:LivingEntityMixin,pl:mixin:APP:curios.mixins.json:MixinLivingEntity,pl:mixin:APP:origins.mixins.json:LikeWaterMixin,pl:mixin:APP:origins.mixins.json:WaterBreathingMixin$CanBreatheInWater,pl:mixin:APP:apugli.mixins.json:common.LivingEntityMixin,pl:mixin:APP:apugli.mixins.json:common.accessor.LivingEntityAccessor,pl:mixin:APP:apugli.forge.mixins.json:common.LivingEntityMixin,pl:mixin:APP:origins_classes.mixins.json:accessor.minecraft.LivingEntityAccessor,pl:mixin:APP:parcool.mixins.json:common.LivingEntityMixin,pl:mixin:APP:mixins.irons_spellbooks.json:LivingEntityMixin,pl:mixin:APP:attributeslib.mixins.json:LivingEntityMixin,pl:mixin:APP:spartanweaponry.mixins.json:LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat115plus.LivingEntityMixin,pl:mixin:APP:obscure_api.mixins.json:LivingEntityMixin,pl:mixin:A}

        at net.minecraft.world.entity.player.Player.m_6469_(Player.java:840) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:pehkui.mixins.json:reach.PlayerEntityMixin,pl:mixin:APP:additionalentityattributes.mixins.json:common.DigSpeedMixin,pl:mixin:APP:additionalentityattributes.mixins.json:common.PlayerEntityMixin,pl:mixin:APP:aether.mixins.json:common.PlayerMixin,pl:mixin:APP:aether.mixins.json:common.accessor.PlayerAccessor,pl:mixin:APP:pehkui.mixins.json:PlayerEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat117plus.PlayerEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1194plus.PlayerEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1201minus.EntityVehicleHeightOffsetMixin,pl:mixin:APP:pehkui.mixins.json:compat1204minus.PlayerEntityMixin,pl:mixin:APP:apoli.mixins.json:PlayerEntityMixin,pl:mixin:APP:apoli.mixins.json:forge.PlayerMixin,pl:mixin:APP:carryon.mixins.json:PlayerMixin,pl:mixin:APP:paraglider.mixins.json:MixinPlayer,pl:mixin:APP:friendsandfoes-common.mixins.json:PlayerEntityMixin,pl:mixin:APP:bettercombat.mixins.json:PlayerEntityAccessor,pl:mixin:APP:bettercombat.mixins.json:PlayerEntityMixin,pl:mixin:APP:justleveling.mixins.json:MixPlayer,pl:mixin:APP:origins.mixins.json:NoCobwebSlowdownMixin,pl:mixin:APP:origins.mixins.json:WaterBreathingMixin$UpdateAir,pl:mixin:APP:apugli.mixins.json:common.PlayerEntityMixin,pl:mixin:APP:origins_classes.mixins.json:common.minecraft.PlayerMixin,pl:mixin:APP:parcool.mixins.json:common.PlayerMixin,pl:mixin:APP:mixins.irons_spellbooks.json:PlayerMixin,pl:mixin:APP:attributeslib.mixins.json:PlayerMixin,pl:mixin:APP:spartanweaponry.mixins.json:PlayerMixin,pl:mixin:APP:medievalorigins.forge.mixins.json:compat.iceandfire.PlayerMixin,pl:mixin:A}

        at net.minecraft.server.level.ServerPlayer.m_6469_(ServerPlayer.java:695) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:revive_me.mixins.json:ServerPlayerMixin,pl:mixin:APP:pehkui.mixins.json:ServerPlayerEntityMixin,pl:mixin:APP:moonlight-common.mixins.json:ServerPlayerMixin,pl:mixin:APP:apugli.mixins.json:common.accessor.ServerPlayerEntityAccessor,pl:mixin:APP:illagerrevolution.mixins.json:ServerPlayerMixins,pl:mixin:A}

        at net.minecraft.world.entity.ai.behavior.warden.SonicBoom.m_217701_(SonicBoom.java:87) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:classloading}

        at java.util.Optional.ifPresent(Optional.java:178) ~[?:?] {re:mixin}

        at net.minecraft.world.entity.ai.behavior.warden.SonicBoom.m_6725_(SonicBoom.java:74) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:classloading}

        at net.minecraft.world.entity.ai.behavior.warden.SonicBoom.m_6725_(SonicBoom.java:19) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:classloading}

        at net.minecraft.world.entity.ai.behavior.Behavior.m_22558_(Behavior.java:66) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,re:classloading}

        at net.minecraft.world.entity.ai.Brain.m_21963_(Brain.java:445) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}

        at net.minecraft.world.entity.ai.Brain.m_21865_(Brain.java:390) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}

        at net.minecraft.world.entity.monster.warden.Warden.m_8024_(Warden.java:311) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:classloading}

        at net.minecraft.world.entity.Mob.m_6140_(Mob.java:768) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:aether.mixins.json:common.MobMixin,pl:mixin:APP:naturalist-common.mixins.json:MobMixin,pl:mixin:APP:pehkui.mixins.json:MobEntityMixin,pl:mixin:APP:moonlight-common.mixins.json:EntityMixin,pl:mixin:APP:spartanweaponry.mixins.json:MobMixin,pl:mixin:APP:pehkui.mixins.json:compat116plus.MobEntityMixin,pl:mixin:A}

        at net.minecraft.world.entity.LivingEntity.m_8107_(LivingEntity.java:2548) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:computing_frames,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:additionalentityattributes.mixins.json:common.LivingEntityMixin,pl:mixin:APP:aether.mixins.json:common.LivingEntityMixin,pl:mixin:APP:aether.mixins.json:common.accessor.LivingEntityAccessor,pl:mixin:APP:pehkui.mixins.json:LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat117plus.LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1194plus.LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1204minus.LivingEntityMixin,pl:mixin:APP:caelus.mixins.json:MixinLivingEntity,pl:mixin:APP:apoli.mixins.json:LivingEntityMixin,pl:mixin:APP:citadel.mixins.json:LivingEntityMixin,pl:mixin:APP:mixins.bosses_of_mass_destruction.json:LivingEntityMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:BlazeLivingEntityMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:LivingEntityMixin,pl:mixin:APP:bettercombat.mixins.json:LivingEntityAccessor,pl:mixin:APP:bettercombat.mixins.json:LivingEntityMixin,pl:mixin:APP:justleveling.mixins.json:MixLivingEntity,pl:mixin:APP:cataclysm.mixins.json:LivingEntityMixin,pl:mixin:APP:curios.mixins.json:MixinLivingEntity,pl:mixin:APP:origins.mixins.json:LikeWaterMixin,pl:mixin:APP:origins.mixins.json:WaterBreathingMixin$CanBreatheInWater,pl:mixin:APP:apugli.mixins.json:common.LivingEntityMixin,pl:mixin:APP:apugli.mixins.json:common.accessor.LivingEntityAccessor,pl:mixin:APP:apugli.forge.mixins.json:common.LivingEntityMixin,pl:mixin:APP:origins_classes.mixins.json:accessor.minecraft.LivingEntityAccessor,pl:mixin:APP:parcool.mixins.json:common.LivingEntityMixin,pl:mixin:APP:mixins.irons_spellbooks.json:LivingEntityMixin,pl:mixin:APP:attributeslib.mixins.json:LivingEntityMixin,pl:mixin:APP:spartanweaponry.mixins.json:LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat115plus.LivingEntityMixin,pl:mixin:APP:obscure_api.mixins.json:LivingEntityMixin,pl:mixin:A}

        at net.minecraft.world.entity.Mob.m_8107_(Mob.java:536) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:aether.mixins.json:common.MobMixin,pl:mixin:APP:naturalist-common.mixins.json:MobMixin,pl:mixin:APP:pehkui.mixins.json:MobEntityMixin,pl:mixin:APP:moonlight-common.mixins.json:EntityMixin,pl:mixin:APP:spartanweaponry.mixins.json:MobMixin,pl:mixin:APP:pehkui.mixins.json:compat116plus.MobEntityMixin,pl:mixin:A}

        at net.minecraft.world.entity.monster.Monster.m_8107_(Monster.java:42) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,re:computing_frames,re:classloading,pl:mixin:APP:naturalist-common.mixins.json:MonsterMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:IllusionerHostileEntityMixin,pl:mixin:A}

        at net.minecraft.world.entity.LivingEntity.m_8119_(LivingEntity.java:2298) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:computing_frames,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:additionalentityattributes.mixins.json:common.LivingEntityMixin,pl:mixin:APP:aether.mixins.json:common.LivingEntityMixin,pl:mixin:APP:aether.mixins.json:common.accessor.LivingEntityAccessor,pl:mixin:APP:pehkui.mixins.json:LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat117plus.LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1194plus.LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat1204minus.LivingEntityMixin,pl:mixin:APP:caelus.mixins.json:MixinLivingEntity,pl:mixin:APP:apoli.mixins.json:LivingEntityMixin,pl:mixin:APP:citadel.mixins.json:LivingEntityMixin,pl:mixin:APP:mixins.bosses_of_mass_destruction.json:LivingEntityMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:BlazeLivingEntityMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:LivingEntityMixin,pl:mixin:APP:bettercombat.mixins.json:LivingEntityAccessor,pl:mixin:APP:bettercombat.mixins.json:LivingEntityMixin,pl:mixin:APP:justleveling.mixins.json:MixLivingEntity,pl:mixin:APP:cataclysm.mixins.json:LivingEntityMixin,pl:mixin:APP:curios.mixins.json:MixinLivingEntity,pl:mixin:APP:origins.mixins.json:LikeWaterMixin,pl:mixin:APP:origins.mixins.json:WaterBreathingMixin$CanBreatheInWater,pl:mixin:APP:apugli.mixins.json:common.LivingEntityMixin,pl:mixin:APP:apugli.mixins.json:common.accessor.LivingEntityAccessor,pl:mixin:APP:apugli.forge.mixins.json:common.LivingEntityMixin,pl:mixin:APP:origins_classes.mixins.json:accessor.minecraft.LivingEntityAccessor,pl:mixin:APP:parcool.mixins.json:common.LivingEntityMixin,pl:mixin:APP:mixins.irons_spellbooks.json:LivingEntityMixin,pl:mixin:APP:attributeslib.mixins.json:LivingEntityMixin,pl:mixin:APP:spartanweaponry.mixins.json:LivingEntityMixin,pl:mixin:APP:pehkui.mixins.json:compat115plus.LivingEntityMixin,pl:mixin:APP:obscure_api.mixins.json:LivingEntityMixin,pl:mixin:A}

        at net.minecraft.world.entity.Mob.m_8119_(Mob.java:337) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:aether.mixins.json:common.MobMixin,pl:mixin:APP:naturalist-common.mixins.json:MobMixin,pl:mixin:APP:pehkui.mixins.json:MobEntityMixin,pl:mixin:APP:moonlight-common.mixins.json:EntityMixin,pl:mixin:APP:spartanweaponry.mixins.json:MobMixin,pl:mixin:APP:pehkui.mixins.json:compat116plus.MobEntityMixin,pl:mixin:A}

        at net.minecraft.world.entity.monster.warden.Warden.m_8119_(Warden.java:278) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:classloading}

        at net.minecraft.server.level.ServerLevel.m_8647_(ServerLevel.java:694) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:aether.mixins.json:common.accessor.ServerLevelAccessor,pl:mixin:APP:pehkui.mixins.json:compat117plus.ServerWorldMixin,pl:mixin:APP:citadel.mixins.json:ServerLevelMixin,pl:mixin:APP:mixins.bosses_of_mass_destruction.json:ExplosionMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:ServerWorldAccessor,pl:mixin:APP:friendsandfoes-common.mixins.json:ServerWorldMixin,pl:mixin:APP:moonlight-common.mixins.json:ServerLevelMixin,pl:mixin:APP:apugli.mixins.json:common.ServerWorldMixin,pl:mixin:A}

        at net.minecraft.world.level.Level.m_46653_(Level.java:479) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:classloading,pl:accesstransformer:B,xf:fml:twilightforest:cloud,pl:mixin:APP:aether.mixins.json:common.accessor.LevelAccessor,pl:mixin:APP:citadel.mixins.json:LevelMixin,pl:mixin:APP:apugli.mixins.json:common.LevelMixin,pl:mixin:A}

        at net.minecraft.server.level.ServerLevel.m_184063_(ServerLevel.java:343) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:aether.mixins.json:common.accessor.ServerLevelAccessor,pl:mixin:APP:pehkui.mixins.json:compat117plus.ServerWorldMixin,pl:mixin:APP:citadel.mixins.json:ServerLevelMixin,pl:mixin:APP:mixins.bosses_of_mass_destruction.json:ExplosionMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:ServerWorldAccessor,pl:mixin:APP:friendsandfoes-common.mixins.json:ServerWorldMixin,pl:mixin:APP:moonlight-common.mixins.json:ServerLevelMixin,pl:mixin:APP:apugli.mixins.json:common.ServerWorldMixin,pl:mixin:A}

        at net.minecraft.world.level.entity.EntityTickList.m_156910_(EntityTickList.java:54) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:classloading}

        at net.minecraft.server.level.ServerLevel.m_8793_(ServerLevel.java:323) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:aether.mixins.json:common.accessor.ServerLevelAccessor,pl:mixin:APP:pehkui.mixins.json:compat117plus.ServerWorldMixin,pl:mixin:APP:citadel.mixins.json:ServerLevelMixin,pl:mixin:APP:mixins.bosses_of_mass_destruction.json:ExplosionMixin,pl:mixin:APP:friendsandfoes-common.mixins.json:ServerWorldAccessor,pl:mixin:APP:friendsandfoes-common.mixins.json:ServerWorldMixin,pl:mixin:APP:moonlight-common.mixins.json:ServerLevelMixin,pl:mixin:APP:apugli.mixins.json:common.ServerWorldMixin,pl:mixin:A}

        at net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:893) ~[server-1.20.1-20230612.114412-srg.jar%23235!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}

        ... 5 more

 

Add crash-reports with sites like https://mclo.gs/

 

There are client-side-only mods in your server's mods folder

Start with removing justleveling from the server - you can keep it in your client