---- Minecraft Crash Report ---- // Hey, that tickles! Hehehe! Time: 2026-03-10 23:04:10 Description: Ticking player java.lang.NoClassDefFoundError: io/redspace/ironsspellbooks/api/registry/AttributeRegistry at com.example.epicclassmod.integration.iss.ManaPersistEvents.forceApplyJobMana(ManaPersistEvents.java:77) ~[epicclassmod-1.8.2.jar%23183!/:1.0.0] {re:classloading} at com.example.epicclassmod.integration.iss.ManaPersistEvents.onPlayerTick(ManaPersistEvents.java:65) ~[epicclassmod-1.8.2.jar%23183!/:1.0.0] {re:classloading} at com.example.epicclassmod.integration.iss.__ManaPersistEvents_onPlayerTick_PlayerTickEvent.invoke(.dynamic) ~[epicclassmod-1.8.2.jar%23183!/:1.0.0] {re:classloading,pl:eventbus:B} at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:73) ~[eventbus-6.0.5.jar%2387!/:?] {} at net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) ~[eventbus-6.0.5.jar%2387!/:?] {} at net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) ~[eventbus-6.0.5.jar%2387!/:?] {} at net.minecraftforge.event.ForgeEventFactory.onPlayerPostTick(ForgeEventFactory.java:945) ~[forge-1.20.1-47.4.10-universal.jar%23201!/:?] {re:mixin,re:classloading} at net.minecraft.world.entity.player.Player.m_8119_(Player.java:285) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.epicfight.json:common.MixinPlayer,pl:mixin:APP:mixins.battle_arts.json:MixinPlayer,pl:mixin:A} at net.minecraft.server.level.ServerPlayer.m_9240_(ServerPlayer.java:467) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:simplyswords-common.mixins.json:ServerPlayerEntityMixin,pl:mixin:A} at net.minecraft.server.network.ServerGamePacketListenerImpl.m_9933_(ServerGamePacketListenerImpl.java:262) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.epicfight.json:common.MixinServerGamePacketListenerImpl,pl:mixin:A} at net.minecraft.network.Connection.m_129483_(Connection.java:263) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading} at net.minecraft.server.network.ServerConnectionListener.m_9721_(ServerConnectionListener.java:142) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading} at net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:907) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:814) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.client.server.IntegratedServer.m_5705_(IntegratedServer.java:89) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:runtimedistcleaner:A} at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at java.lang.Thread.run(Thread.java:840) ~[?:?] {} Caused by: java.lang.ClassNotFoundException: io.redspace.ironsspellbooks.api.registry.AttributeRegistry at jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[?:?] {} at java.lang.ClassLoader.loadClass(ClassLoader.java:525) ~[?:?] {} at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:137) ~[securejarhandler-2.1.10.jar:?] {} at java.lang.ClassLoader.loadClass(ClassLoader.java:525) ~[?:?] {} at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:137) ~[securejarhandler-2.1.10.jar:?] {} at java.lang.ClassLoader.loadClass(ClassLoader.java:525) ~[?:?] {} ... 18 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Server thread Suspected Mod: Epic Class Mod (epicclassmod), Version: 1.0.0 at TRANSFORMER/epicclassmod@1.0.0/com.example.epicclassmod.integration.iss.ManaPersistEvents.forceApplyJobMana(ManaPersistEvents.java:77) Stacktrace: at com.example.epicclassmod.integration.iss.ManaPersistEvents.forceApplyJobMana(ManaPersistEvents.java:77) ~[epicclassmod-1.8.2.jar%23183!/:1.0.0] {re:classloading} at com.example.epicclassmod.integration.iss.ManaPersistEvents.onPlayerTick(ManaPersistEvents.java:65) ~[epicclassmod-1.8.2.jar%23183!/:1.0.0] {re:classloading} at com.example.epicclassmod.integration.iss.__ManaPersistEvents_onPlayerTick_PlayerTickEvent.invoke(.dynamic) ~[epicclassmod-1.8.2.jar%23183!/:1.0.0] {re:classloading,pl:eventbus:B} at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:73) ~[eventbus-6.0.5.jar%2387!/:?] {} at net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) ~[eventbus-6.0.5.jar%2387!/:?] {} at net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) ~[eventbus-6.0.5.jar%2387!/:?] {} at net.minecraftforge.event.ForgeEventFactory.onPlayerPostTick(ForgeEventFactory.java:945) ~[forge-1.20.1-47.4.10-universal.jar%23201!/:?] {re:mixin,re:classloading} at net.minecraft.world.entity.player.Player.m_8119_(Player.java:285) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.epicfight.json:common.MixinPlayer,pl:mixin:APP:mixins.battle_arts.json:MixinPlayer,pl:mixin:A} -- Player being ticked -- Details: Entity Type: minecraft:player (net.minecraft.server.level.ServerPlayer) Entity ID: 103 Entity Name: MINECRAFTIAN275 Entity's Exact location: -6.50, 125.00, 1.50 Entity's Block location: World: (-7,125,1), Section: (at 9,13,1 in -1,7,0; chunk contains blocks -16,-64,0 to -1,319,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,-64,0 to -1,319,511) Entity's Momentum: 0.00, -0.08, 0.00 Entity's Passengers: [] Entity's Vehicle: null Stacktrace: at net.minecraft.server.level.ServerPlayer.m_9240_(ServerPlayer.java:467) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:simplyswords-common.mixins.json:ServerPlayerEntityMixin,pl:mixin:A} at net.minecraft.server.network.ServerGamePacketListenerImpl.m_9933_(ServerGamePacketListenerImpl.java:262) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.epicfight.json:common.MixinServerGamePacketListenerImpl,pl:mixin:A} at net.minecraft.network.Connection.m_129483_(Connection.java:263) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading} at net.minecraft.server.network.ServerConnectionListener.m_9721_(ServerConnectionListener.java:142) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading} at net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:907) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:814) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.client.server.IntegratedServer.m_5705_(IntegratedServer.java:89) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:runtimedistcleaner:A} at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251) ~[client-1.20.1-20230612.114412-srg.jar%23196!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at java.lang.Thread.run(Thread.java:840) ~[?:?] {} -- System Details -- Details: Minecraft Version: 1.20.1 Minecraft Version ID: 1.20.1 Operating System: Windows 11 (amd64) version 10.0 Java Version: 17.0.15, Microsoft Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft Memory: 1471900408 bytes (1403 MiB) / 2147483648 bytes (2048 MiB) up to 2147483648 bytes (2048 MiB) CPUs: 4 Processor Vendor: GenuineIntel Processor Name: Intel(R) N97 Identifier: Intel64 Family 6 Model 190 Stepping 0 Microarchitecture: unknown Frequency (GHz): 2.00 Number of physical packages: 1 Number of physical CPUs: 4 Number of logical CPUs: 4 Graphics card #0 name: Intel(R) UHD Graphics Graphics card #0 vendor: Intel Corporation (0x8086) Graphics card #0 VRAM (MB): 1024.00 Graphics card #0 deviceId: 0x46d1 Graphics card #0 versionInfo: DriverVersion=31.0.101.4502 Memory slot #0 capacity (MB): 16384.00 Memory slot #0 clockSpeed (GHz): 3.20 Memory slot #0 type: DDR4 Virtual memory max (MB): 18183.74 Virtual memory used (MB): 17386.09 Swap memory total (MB): 2060.16 Swap memory used (MB): 173.73 JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Server Running: true Player Count: 1 / 8; [ServerPlayer['MINECRAFTIAN275'/103, l='ServerLevel[New World]', x=-6.50, y=125.00, z=1.50]] Data Packs: vanilla, mod:invincible, mod:mixinsquared (incompatible), mod:geckolib, mod:epicclassmod, mod:mixinextras (incompatible), mod:shijiazhuang, mod:architectury (incompatible), mod:cloth_config (incompatible), mod:simplyswords (incompatible), mod:forge, mod:embeddium, mod:cdmoveset, mod:epicfight, mod:lazy_utilities, mod:giveme_a_efdg, mod:efm_ex (incompatible), mod:wom, mod:epic_fight_avalon, mod:efn, mod:simplyswords_epicfied_2, mod:giveme_a_sanji, mod:battlearts_api (incompatible), mod:battle_arts, mod:epicfightx, mod:epicfight_edp Enabled Feature Flags: minecraft:vanilla World Generation: Stable Type: Integrated Server (map_client.txt) Is Modded: Definitely; Client brand changed to 'forge'; Server brand changed to 'forge' Launched Version: 1.20.1-forge-47.4.10 ModLauncher: 10.0.9+10.0.9+main.dcd20f30 ModLauncher launch target: forgeclient ModLauncher naming: srg ModLauncher services: mixin-0.8.5.jar mixin PLUGINSERVICE eventbus-6.0.5.jar eventbus PLUGINSERVICE fmlloader-1.20.1-47.4.10.jar slf4jfixer PLUGINSERVICE fmlloader-1.20.1-47.4.10.jar object_holder_definalize PLUGINSERVICE fmlloader-1.20.1-47.4.10.jar runtime_enum_extender PLUGINSERVICE fmlloader-1.20.1-47.4.10.jar capability_token_subclass PLUGINSERVICE accesstransformers-8.0.4.jar accesstransformer PLUGINSERVICE fmlloader-1.20.1-47.4.10.jar runtimedistcleaner PLUGINSERVICE modlauncher-10.0.9.jar mixin TRANSFORMATIONSERVICE modlauncher-10.0.9.jar fml TRANSFORMATIONSERVICE FML Language Providers: minecraft@1.0 lowcodefml@null javafml@null Mod List: client-1.20.1-20230612.114412-srg.jar |Minecraft |minecraft |1.20.1 |DONE |Manifest: ****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:**** epic-fight-invincible-lib-20.14.7.5-mc1.20.1-forge|Epic Fight - Invincible |invincible |**.**.**.** |DONE |Manifest: NOSIGNATURE mixinsquared-forge-0.2.0-beta.6.jar |MixinSquared |mixinsquared |0.2.0-beta.6 |DONE |Manifest: NOSIGNATURE geckolib-388172-7025129.jar |GeckoLib 4 |geckolib |4.8.2 |DONE |Manifest: NOSIGNATURE epicclassmod-1.8.2.jar |Epic Class Mod |epicclassmod |1.0.0 |DONE |Manifest: NOSIGNATURE mixinextras-forge-0.4.1.jar |MixinExtras |mixinextras |0.4.1 |DONE |Manifest: NOSIGNATURE ShijiazhuangMod1.20.1-20.14.jar |Shijiazhuang Mod |shijiazhuang |20.14 |DONE |Manifest: NOSIGNATURE architectury-9.2.14-forge.jar |Architectury |architectury |9.2.14 |DONE |Manifest: NOSIGNATURE cloth-config-11.1.136-forge.jar |Cloth Config v10 API |cloth_config |11.1.136 |DONE |Manifest: NOSIGNATURE simplyswords-forge-1.56.0-1.20.1.jar |Simply Swords |simplyswords |1.56.0-1.20.1 |DONE |Manifest: NOSIGNATURE forge-1.20.1-47.4.10-universal.jar |Forge |forge |47.4.10 |DONE |Manifest: ****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:**** embeddium-0.3.31+mc1.20.1.jar |Embeddium |embeddium |0.3.31+mc1.20.1 |DONE |Manifest: NOSIGNATURE EpicFight-Resurrection-forge1.20.1-0.20.12.2.jar |EpicFight-Resurrection |cdmoveset |2.0 |DONE |Manifest: NOSIGNATURE epic-fight-20.14.11-mc1.20.1-forge.jar |Epic Fight |epicfight |20.14.11 |DONE |Manifest: NOSIGNATURE lazy_utilities-2.9.5.jar |Lazy Utilities |lazy_utilities |2.9.5 |DONE |Manifest: NOSIGNATURE gma_dual_greatsword-1.8_EF12+.jar |GMA: Dual Greatsword |giveme_a_efdg |1.8 |DONE |Manifest: NOSIGNATURE ExCap-20.14.8.2.jar |Epic Fight: ExCap |efm_ex |**.**.**.** |DONE |Manifest: NOSIGNATURE WeaponsOfMiracles-2.0.15-mc1.20.1-forge.jar |Weapons of miracle |wom |2.0.15 |DONE |Manifest: NOSIGNATURE epic_fight_avalon-20.12.6.4.jar |Epic fight - Avalon |epic_fight_avalon |**.**.**.** |DONE |Manifest: NOSIGNATURE EpicFight Nightfall-3.1.3-all.jar |EpicFight Nightfall |efn |3.1.3 |DONE |Manifest: NOSIGNATURE Simplyswords-Epicfied-2.jar |Simply Swords EpicFied 2.2 |simplyswords_epicfied_2 |2.2-1.20.1 |DONE |Manifest: NOSIGNATURE gma_epic_sanji-1.8_EF12+.jar |GMA: Epic Sanji |giveme_a_sanji |1.8 |DONE |Manifest: NOSIGNATURE BattleArtsAPI-20.14.8.0.jar |Battle Arts API |battlearts_api |**.**.**.** |DONE |Manifest: NOSIGNATURE BattleArts-20.14.8.5.jar |Epic Fight - Battle Arts |battle_arts |**.**.**.** |DONE |Manifest: NOSIGNATURE epicfight-extra-1.1.3-mc1.20.1-forge-all.jar |Epic Fight Extra |epicfightx |1.1.3 |DONE |Manifest: NOSIGNATURE epicfight_extended_datapacks-1.8.4.jar |Epic Fight - Extended Datapack|epicfight_edp |1.8.4 |DONE |Manifest: NOSIGNATURE Crash Report UUID: 01a2e8b2-0260-45a4-b661-34b42632bb8e FML: 47.4 Forge: net.minecraftforge:47.4.10