server core:Arclight
Minecraft: 1.20.1
forge: 47.2.20
Soulslike-Weaponry: 1.1.4.4d
epic-fight:20.9.2

[01:19:54 ERROR] [STDERR]: java.util.NoSuchElementException: Item Capability Exception: No Item named soulsweapons:holy_moonlight_shortsword
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/yesman.epicfight.api.data.reloader.ItemCapabilityReloadListener.apply(ItemCapabilityReloadListener.java:77)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/yesman.epicfight.api.data.reloader.ItemCapabilityReloadListener.m_5787_(ItemCapabilityReloadListener.java:48)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.server.packs.resources.SimplePreparableReloadListener.m_10789_(SimplePreparableReloadListener.java:13)
[01:19:54 ERROR] [STDERR]: at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718)
[01:19:54 ERROR] [STDERR]: at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.server.packs.resources.SimpleReloadInstance.m_143940_(SimpleReloadInstance.java:69)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.Util.m_214652_(Util.java:783)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.Util.m_214679_(Util.java:772)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.server.Main.main(Main.java:166)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[01:19:54 ERROR] [STDERR]: at java.base/java.lang.reflect.Method.invoke(Method.java:568)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.targets.CommonLaunchHandler.serverService(CommonLaunchHandler.java:103)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.targets.CommonServerLaunchHandler.lambda$makeService$0(CommonServerLaunchHandler.java:27)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.run(Launcher.java:108)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.main(Launcher.java:78)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/arclight.boot/io.izzel.arclight.boot.application.ApplicationBootstrap.accept(ApplicationBootstrap.java:46)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/arclight.boot/io.izzel.arclight.boot.application.ApplicationBootstrap.accept(ApplicationBootstrap.java:13)
[01:19:54 ERROR] [STDERR]: at [email protected]/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[01:19:54 ERROR] [STDERR]: at java.base/java.lang.reflect.Method.invoke(Method.java:568)
[01:19:54 ERROR] [STDERR]: at io.izzel.arclight.boot.application.Main_Forge.main(Main_Forge.java:23)
[01:19:54 ERROR] [STDERR]: at io.izzel.arclight.server.Launcher.main(Launcher.java:18)
[01:19:54 ERROR] [STDERR]: java.util.NoSuchElementException: Item Capability Exception: No Item named soulsweapons:test_item
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/yesman.epicfight.api.data.reloader.ItemCapabilityReloadListener.apply(ItemCapabilityReloadListener.java:77)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/yesman.epicfight.api.data.reloader.ItemCapabilityReloadListener.m_5787_(ItemCapabilityReloadListener.java:48)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.server.packs.resources.SimplePreparableReloadListener.m_10789_(SimplePreparableReloadListener.java:13)
[01:19:54 ERROR] [STDERR]: at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718)
[01:19:54 ERROR] [STDERR]: at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.server.packs.resources.SimpleReloadInstance.m_143940_(SimpleReloadInstance.java:69)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.Util.m_214652_(Util.java:783)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.Util.m_214679_(Util.java:772)
[01:19:54 ERROR] [STDERR]: at TRANSFORMER/[email protected]/net.minecraft.server.Main.main(Main.java:166)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[01:19:54 ERROR] [STDERR]: at java.base/java.lang.reflect.Method.invoke(Method.java:568)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.targets.CommonLaunchHandler.serverService(CommonLaunchHandler.java:103)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.targets.CommonServerLaunchHandler.lambda$makeService$0(CommonServerLaunchHandler.java:27)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.run(Launcher.java:108)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.main(Launcher.java:78)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/arclight.boot/io.izzel.arclight.boot.application.ApplicationBootstrap.accept(ApplicationBootstrap.java:46)
[01:19:54 ERROR] [STDERR]: at MC-BOOTSTRAP/arclight.boot/io.izzel.arclight.boot.application.ApplicationBootstrap.accept(ApplicationBootstrap.java:13)
[01:19:54 ERROR] [STDERR]: at [email protected]/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
[01:19:54 ERROR] [STDERR]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[01:19:54 ERROR] [STDERR]: at java.base/java.lang.reflect.Method.invoke(Method.java:568)
[01:19:54 ERROR] [STDERR]: at io.izzel.arclight.boot.application.Main_Forge.main(Main_Forge.java:23)
[01:19:54 ERROR] [STDERR]: at io.izzel.arclight.server.Launcher.main(Launcher.java:18)

You can ignore the messages about missing capabilities, I just managed to name the Holy Moonlight Sword's Better Combat file the wrong id, it just notifies you about it. Shouldn't impact your game, I've already fixed this issue for the next update regardless.