Crash report:
`---- Minecraft Crash Report ----
// There are four lights!

Time: 2/13/22, 3:23 PM
Description: Rendering entity in world

java.lang.NoClassDefFoundError: chronosacaria/mcdw/items/ItemsInit
at net.backslot.client.feature.BeltSlotFeatureRenderer.render(BeltSlotFeatureRenderer.java:59)
at net.backslot.client.feature.BeltSlotFeatureRenderer.method_4199(BeltSlotFeatureRenderer.java:26)
at net.minecraft.class_922.method_4054(class_922.java:145)
at net.minecraft.class_1007.method_4215(class_1007.java:64)
at net.minecraft.class_1007.method_3936(class_1007.java:42)
at net.minecraft.class_898.method_3954(class_898.java:135)
at net.minecraft.class_761.method_22977(class_761.java:1577)
at net.minecraft.class_761.method_22710(class_761.java:1325)
at net.minecraft.class_757.method_3188(class_757.java:1031)
at net.minecraft.class_757.method_3192(class_757.java:811)
at net.minecraft.class_310.method_1523(class_310.java:1117)
at net.minecraft.class_310.method_1514(class_310.java:733)
at net.minecraft.client.main.Main.main(Main.java:238)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:608)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:77)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: java.lang.ClassNotFoundException: chronosacaria.mcdw.items.ItemsInit
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:158)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 20 more

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Render thread
Stacktrace:
at net.backslot.client.feature.BeltSlotFeatureRenderer.render(BeltSlotFeatureRenderer.java:59)
at net.backslot.client.feature.BeltSlotFeatureRenderer.method_4199(BeltSlotFeatureRenderer.java:26)
at net.minecraft.class_922.method_4054(class_922.java:145)
at net.minecraft.class_1007.method_4215(class_1007.java:64)
at net.minecraft.class_1007.method_3936(class_1007.java:42)
at net.minecraft.class_898.method_3954(class_898.java:135)
at net.minecraft.class_761.method_22977(class_761.java:1577)
at net.minecraft.class_761.method_22710(class_761.java:1325)
at net.minecraft.class_757.method_3188(class_757.java:1031)

-- Entity being rendered --
Details:
Entity Type: minecraft:player (net.minecraft.class_746)
Entity ID: 204
Entity Name: mb155
Entity's Exact location: -2.16, 96.00, 6.25
Entity's Block location: World: (-3,96,6), Section: (at 13,0,6 in -1,6,0; 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.class_898.method_3954(class_898.java:135)
at net.minecraft.class_761.method_22977(class_761.java:1577)
at net.minecraft.class_761.method_22710(class_761.java:1325)
at net.minecraft.class_757.method_3188(class_757.java:1031)
at net.minecraft.class_757.method_3192(class_757.java:811)
at net.minecraft.class_310.method_1523(class_310.java:1117)
at net.minecraft.class_310.method_1514(class_310.java:733)
at net.minecraft.client.main.Main.main(Main.java:238)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:608)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:77)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

-- Renderer details --
Details:
Assigned renderer: net.minecraft.class_1007@eefed61
Location: 0.74,-3.65,3.18 - World: (0,-4,3), Section: (at 0,12,3 in 0,-1,0; chunk contains blocks 0,-64,0 to 15,319,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,-64,0 to 511,319,511)
Rotation: -13.049791
Delta: 4.7922134E-5
Stacktrace:
at net.minecraft.class_898.method_3954(class_898.java:135)
at net.minecraft.class_761.method_22977(class_761.java:1577)
at net.minecraft.class_761.method_22710(class_761.java:1325)
at net.minecraft.class_757.method_3188(class_757.java:1031)
at net.minecraft.class_757.method_3192(class_757.java:811)
at net.minecraft.class_310.method_1523(class_310.java:1117)
at net.minecraft.class_310.method_1514(class_310.java:733)
at net.minecraft.client.main.Main.main(Main.java:238)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:608)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:77)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

-- Affected level --
Details:
All players: 1 total; [class_746['mb155'/204, l='ClientLevel', x=-2.16, y=96.00, z=6.25]]
Chunk stats: 1089, 715
Level dimension: minecraft:overworld
Level spawn location: World: (0,101,0), Section: (at 0,5,0 in 0,6,0; chunk contains blocks 0,-64,0 to 15,319,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,-64,0 to 511,319,511)
Level time: 1929 game time, 1929 day time
Server brand: fabric
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.class_638.method_8538(class_638.java:408)
at net.minecraft.class_310.method_1587(class_310.java:2402)
at net.minecraft.class_310.method_1514(class_310.java:752)
at net.minecraft.client.main.Main.main(Main.java:238)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:608)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:77)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

-- Last reload --
Details:
Reload number: 1
Reload reason: initial
Finished: Yes
Packs: Programmer Art, Default, Fabric Mods, replaymod_lang

-- System Details --
Details:
Minecraft Version: 1.18.1
Minecraft Version ID: 1.18.1
Operating System: Windows 10 (amd64) version 10.0
Java Version: 17.0.1, Microsoft
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
Memory: 1341698232 bytes (1279 MiB) / 2147483648 bytes (2048 MiB) up to 2147483648 bytes (2048 MiB)
CPUs: 4
Processor Vendor: GenuineIntel
Processor Name: Intel(R) Core(TM) i5-6260U CPU @ 1.80GHz
Identifier: Intel64 Family 6 Model 78 Stepping 3
Microarchitecture: Skylake (Client)
Frequency (GHz): 1.80
Number of physical packages: 1
Number of physical CPUs: 2
Number of logical CPUs: 4
Graphics card #0 name: Intel(R) Iris(R) Graphics 540
Graphics card #0 vendor: Intel Corporation (0x8086)
Graphics card #0 VRAM (MB): 1024.00
Graphics card #0 deviceId: 0x1926
Graphics card #0 versionInfo: DriverVersion=27.20.100.8681
Memory slot #0 capacity (MB): 8192.00
Memory slot #0 clockSpeed (GHz): 2.13
Memory slot #0 type: DDR4
Virtual memory max (MB): 10303.93
Virtual memory used (MB): 8458.71
Swap memory total (MB): 2222.21
Swap memory used (MB): 183.17
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
Fabric Mods:
amecsapi: Amecs API 1.3.3+mc1.18-pre1
backslot: BackSlot 1.2.4
blockshifter: Blockshifter 1.4.1+fabric-1.18
cardinal-components-base: Cardinal Components API (base) 4.0.0
cardinal-components-entity: Cardinal Components API (entities) 4.0.0
cloth-basic-math: cloth-basic-math 0.6.0
cloth-config: Cloth Config v6 6.1.48
crusade: Crusade 1.2.5
dehydration: Dehydration 1.2.5
enchant_giver: Enchant Giver 1.1.0
fabric: Fabric API 0.44.0+1.18
fabric-api-base: Fabric API Base 0.4.1+b4f4f6cd14
fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.4.0+16d92c47c8
fabric-biome-api-v1: Fabric Biome API (v1) 6.0.1+ded849a9c8
fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.9+3ac43d95c8
fabric-command-api-v1: Fabric Command API (v1) 1.1.6+3ac43d95c8
fabric-commands-v0: Fabric Commands (v0) 0.2.5+b4f4f6cdc8
fabric-containers-v0: Fabric Containers (v0) 0.1.18+d154e2c6c8
fabric-content-registries-v0: Fabric Content Registries (v0) 0.4.5+6f53a73dc8
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.1.8+3ac43d95c8
fabric-dimensions-v1: Fabric Dimensions API (v1) 2.1.7+43d29571c8
fabric-entity-events-v1: Fabric Entity Events (v1) 1.4.5+6b21378ac8
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.4.16+bfa23f17c8
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.6+b4f4f6cdc8
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.10+3ac43d95c8
fabric-item-api-v1: Fabric Item API (v1) 1.3.0+691a79b5c8
fabric-item-groups-v0: Fabric Item Groups (v0) 0.3.3+3ac43d95c8
fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.8+c8aba2f3c8
fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.6+b4f4f6cdc8
fabric-language-scala: Fabric Language Scala 1.1.0+scala.2.13.6
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 1.4.10+c15ca335c8
fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.0.8+3ac43d95c8
fabric-mining-level-api-v1: Fabric Mining Level API (v1) 1.0.3+3ac43d9514
fabric-mining-levels-v0: Fabric Mining Levels (v0) 0.1.7+b4f4f6cdc8
fabric-models-v0: Fabric Models (v0) 0.3.3+3ac43d95c8
fabric-networking-api-v1: Fabric Networking API (v1) 1.0.18+3ac43d9514
fabric-networking-v0: Fabric Networking (v0) 0.3.5+b4f4f6cdc8
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 1.11.0+3b82842ec8
fabric-object-builders-v0: Fabric Object Builders (v0) 0.7.8+3ac43d95c8
fabric-particles-v1: Fabric Particles (v1) 0.2.9+526dc1acc8
fabric-registry-sync-v0: Fabric Registry Sync (v0) 0.8.5+3ac43d9514
fabric-renderer-api-v1: Fabric Renderer API (v1) 0.4.9+3ac43d95c8
fabric-renderer-indigo: Fabric Renderer - Indigo 0.4.12+3ac43d95c8
fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.7+b4f4f6cdc8
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.4+7242e9d7c8
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 0.1.18+3ac43d95c8
fabric-rendering-v0: Fabric Rendering (v0) 1.1.9+b4f4f6cdc8
fabric-rendering-v1: Fabric Rendering (v1) 1.10.3+6b21378a14
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.4.11+3ac43d9514
fabric-screen-api-v1: Fabric Screen API (v1) 1.0.7+3ac43d95c8
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.1.11+3ac43d95c8
fabric-structure-api-v1: Fabric Structure API (v1) 2.0.8+295197a7c8
fabric-tag-extensions-v0: Fabric Tag Extensions (v0) 1.2.5+3ac43d9514
fabric-textures-v0: Fabric Textures (v0) 1.0.9+3ac43d95c8
fabric-tool-attribute-api-v1: Fabric Tool Attribute API (v1) 1.3.4+7de09f5514
fabric-transfer-api-v1: Fabric Transfer API (v1) 1.5.5+b4f4f6cdc8
fabricloader: Fabric Loader 0.12.12
fiber: fiber 0.23.0-2
java: OpenJDK 64-Bit Server VM 17
mcda: MC Dungeons Armors 2.0.1
mcdw: MC Dungeons Weapons 3.6.0-1.18
medievalweapons: Medieval Weapons 1.1.7
minecraft: Minecraft 1.18.1
owo: oωo 0.5.1+1.18
patchouli: Patchouli 1.18.1-65-FABRIC
reach-entity-attributes: Reach Entity Attributes 2.1.1
replaymod: Replay Mod 1.18.1-2.6.3
things: Things 0.2.14+1.18
trinkets: Trinkets 3.2.0
Launched Version: fabric-loader-0.12.12-1.18.1
Backend library: LWJGL version 3.2.2 build 10
Backend API: Intel(R) Iris(R) Graphics 540 GL version 3.2.0 - Build 27.20.100.8681, Intel
Window size: 1366x705
GL Caps: Using framebuffer using OpenGL 3.2
GL debug messages:
Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'fabric'; Server brand changed to 'fabric'
Type: Integrated Server (map_client.txt)
Graphics mode: fancy
Resource Packs: programer_art, vanilla
Current Language: English (US)
CPU: 4x Intel(R) Core(TM) i5-6260U CPU @ 1.80GHz
Server Running: true
Player Count: 1 / 8; [class_3222['mb155'/204, l='ServerLevel[New World]', x=-2.16, y=96.00, z=6.25]]
Data Packs: vanilla, Fabric Mods`

Please update the mcdw mod to the latest version