---- Minecraft Network Protocol Error Report ---- // Please insert The Internet CD #4 Time: 2025-06-16 17:05:30 Description: Packet handling error io.netty.handler.codec.DecoderException: Failed to decode packet 'clientbound/minecraft:add_entity' at knot//net.minecraft.class_9136.method_56425(class_9136.java:38) at knot//net.minecraft.class_9136.decode(class_9136.java:14) at knot//net.minecraft.class_2543.decode(class_2543.java:31) at knot//io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:529) at knot//io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:468) at knot//io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.flow.FlowControlHandler.dequeue(FlowControlHandler.java:202) at knot//io.netty.handler.flow.FlowControlHandler.channelRead(FlowControlHandler.java:164) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) at knot//io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) at knot//io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:333) at knot//io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:454) at knot//io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) at knot//io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) at knot//io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788) at knot//io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) at knot//io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) at knot//io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) at knot//io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) at knot//io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:1583) Caused by: java.lang.IndexOutOfBoundsException: readerIndex(57) + length(1) exceeds writerIndex(57): PooledUnsafeDirectByteBuf(ridx: 57, widx: 57, cap: 57) at knot//io.netty.buffer.AbstractByteBuf.checkReadableBytes0(AbstractByteBuf.java:1442) at knot//io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.java:730) at knot//net.minecraft.class_8703.method_53016(class_8703.java:28) at knot//net.minecraft.class_2540.method_10816(class_2540.java:484) at knot//net.minecraft.class_2604.handler$zim000$customnpcs$initFromBuf(class_2604.java:542) at knot//net.minecraft.class_2604.(class_2604.java:84) at knot//net.minecraft.class_9139$6.decode(class_9139.java:37) at knot//net.minecraft.class_9139$9.method_56441(class_9139.java:91) at knot//net.minecraft.class_9139$9.decode(class_9139.java:87) at knot//net.minecraft.class_9136.method_56425(class_9136.java:36) ... 45 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Netty Client IO #1 Stacktrace: at knot//net.minecraft.class_2547.method_55622(class_2547.java:33) -- Connection -- Details: Protocol: play Flow: CLIENTBOUND Server type: OTHER Server brand: Paper (Velocity) Stacktrace: at knot//net.minecraft.class_2547.method_55622(class_2547.java:33) at knot//net.minecraft.class_2600.method_59803(class_2600.java:62) at knot//net.minecraft.class_8673.method_60882(class_8673.java:136) at knot//net.minecraft.class_8673.method_60881(class_8673.java:127) at knot//net.minecraft.class_2535.exceptionCaught(class_2535.java:161) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:346) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:325) at knot//io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:317) at knot//io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:143) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:346) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:447) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.flow.FlowControlHandler.dequeue(FlowControlHandler.java:202) at knot//io.netty.handler.flow.FlowControlHandler.channelRead(FlowControlHandler.java:164) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) at knot//io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) at knot//io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:333) at knot//io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:454) at knot//io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at knot//io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) at knot//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at knot//io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) at knot//io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) at knot//io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788) at knot//io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) at knot//io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) at knot//io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) at knot//io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) at knot//io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:1583) -- Cobblemon -- Details: Version: 1.6.1 Is Snapshot: false Git Commit: c66de51 (https://gitlab.com/cable-mc/cobblemon/-/commit/c66de51e39dd5144bde3550f630b58f67a835b65) Branch: HEAD -- System Details -- Details: Minecraft Version: 1.21.1 Minecraft Version ID: 1.21.1 Operating System: Windows 11 (amd64) version 10.0 Java Version: 21.0.7, Microsoft Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft Memory: 788529152 bytes (752 MiB) / 1738539008 bytes (1658 MiB) up to 4294967296 bytes (4096 MiB) CPUs: 12 Processor Vendor: GenuineIntel Processor Name: Intel(R) Core(TM) i5-10400F CPU @ 2.90GHz Identifier: Intel64 Family 6 Model 165 Stepping 3 Microarchitecture: Comet Lake Frequency (GHz): 2.90 Number of physical packages: 1 Number of physical CPUs: 6 Number of logical CPUs: 12 Graphics card #0 name: NVIDIA GeForce GTX 1660 SUPER Graphics card #0 vendor: NVIDIA Graphics card #0 VRAM (MiB): 6144.00 Graphics card #0 deviceId: VideoController1 Graphics card #0 versionInfo: 32.0.15.6094 Memory slot #0 capacity (MiB): 8192.00 Memory slot #0 clockSpeed (GHz): 2.13 Memory slot #0 type: DDR4 Memory slot #1 capacity (MiB): 8192.00 Memory slot #1 clockSpeed (GHz): 2.13 Memory slot #1 type: DDR4 Virtual memory max (MiB): 17858.01 Virtual memory used (MiB): 14164.83 Swap memory total (MiB): 1536.00 Swap memory used (MiB): 80.92 Space in storage for jna.tmpdir (MiB): available: 143721.08, total: 476047.00 Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): available: 143721.08, total: 476047.00 Space in storage for io.netty.native.workdir (MiB): available: 143721.08, total: 476047.00 Space in storage for java.io.tmpdir (MiB): available: 143721.08, total: 476047.00 Space in storage for workdir (MiB): available: 143721.08, total: 476047.00 JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx4096m -Xms256m Fabric Mods: architectury: Architectury 13.0.8 cardinal-components: Cardinal Components API 6.1.2 cardinal-components-base: Cardinal Components API (base) 6.1.2 cardinal-components-block: Cardinal Components API (blocks) 6.1.2 cardinal-components-chunk: Cardinal Components API (chunks) 6.1.2 cardinal-components-entity: Cardinal Components API (entities) 6.1.2 cardinal-components-item: Cardinal Components API (items) 6.1.2 cardinal-components-level: Cardinal Components API (world saves) 6.1.2 cardinal-components-scoreboard: Cardinal Components API (scoreboard) 6.1.2 cardinal-components-world: Cardinal Components API (worlds) 6.1.2 cobblemon: Cobblemon 1.6.1+1.21.1 fabric-language-kotlin: Fabric Language Kotlin 1.11.0+kotlin.2.0.0 org_jetbrains_kotlin_kotlin-reflect: kotlin-reflect 2.0.0 org_jetbrains_kotlin_kotlin-stdlib: kotlin-stdlib 2.0.0 org_jetbrains_kotlin_kotlin-stdlib-jdk7: kotlin-stdlib-jdk7 2.0.0 org_jetbrains_kotlin_kotlin-stdlib-jdk8: kotlin-stdlib-jdk8 2.0.0 org_jetbrains_kotlinx_atomicfu-jvm: atomicfu-jvm 0.24.0 org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm: kotlinx-coroutines-core-jvm 1.8.1 org_jetbrains_kotlinx_kotlinx-coroutines-jdk8: kotlinx-coroutines-jdk8 1.8.1 org_jetbrains_kotlinx_kotlinx-datetime-jvm: kotlinx-datetime-jvm 0.6.0 org_jetbrains_kotlinx_kotlinx-serialization-cbor-jvm: kotlinx-serialization-cbor-jvm 1.6.3 org_jetbrains_kotlinx_kotlinx-serialization-core-jvm: kotlinx-serialization-core-jvm 1.6.3 org_jetbrains_kotlinx_kotlinx-serialization-json-jvm: kotlinx-serialization-json-jvm 1.6.3 cobblemonpokemonbadges: Cobblemon Pokemon Badges 0.1.1 cobblemonridingfabric: Cobblemon Riding Fabric 1.3.7 customnpcs: Custom NPCs 1.0.0 dynamiclights: Dynamic Lights 1.8.6+mod fabric-api: Fabric API 0.116.2+1.21.1 fabric-api-base: Fabric API Base 0.4.42+6573ed8c19 fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.6.71+b559734419 fabric-biome-api-v1: Fabric Biome API (v1) 13.0.31+d527f9fd19 fabric-block-api-v1: Fabric Block API (v1) 1.1.0+0bc3503219 fabric-block-view-api-v2: Fabric BlockView API (v2) 1.0.11+ebb2264e19 fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.52+0af3f5a719 fabric-client-tags-api-v1: Fabric Client Tags 1.1.15+6573ed8c19 fabric-command-api-v1: Fabric Command API (v1) 1.2.49+f71b366f19 fabric-command-api-v2: Fabric Command API (v2) 2.2.28+6ced4dd919 fabric-commands-v0: Fabric Commands (v0) 0.2.66+df3654b319 fabric-content-registries-v0: Fabric Content Registries (v0) 8.0.19+b559734419 fabric-convention-tags-v1: Fabric Convention Tags 2.1.5+7f945d5b19 fabric-convention-tags-v2: Fabric Convention Tags (v2) 2.11.1+a406e79519 fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.2.29+0af3f5a719 fabric-data-attachment-api-v1: Fabric Data Attachment API (v1) 1.4.5+6116a37819 fabric-data-generation-api-v1: Fabric Data Generation API (v1) 20.2.30+16c4ae2519 fabric-dimensions-v1: Fabric Dimensions API (v1) 4.0.0+6fc22b9919 fabric-entity-events-v1: Fabric Entity Events (v1) 1.8.0+2b27e0a419 fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.7.13+ba9dae0619 fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.53+6ced4dd919 fabric-item-api-v1: Fabric Item API (v1) 11.1.1+d5debaed19 fabric-item-group-api-v1: Fabric Item Group API (v1) 4.1.7+def88e3a19 fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.47+0af3f5a719 fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.45+df3654b319 fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 2.6.0+0865547519 fabric-loot-api-v2: Fabric Loot API (v2) 3.0.15+3f89f5a519 fabric-loot-api-v3: Fabric Loot API (v3) 1.0.3+3f89f5a519 fabric-message-api-v1: Fabric Message API (v1) 6.0.14+8aaf3aca19 fabric-model-loading-api-v1: Fabric Model Loading API (v1) 2.0.0+fe474d6b19 fabric-networking-api-v1: Fabric Networking API (v1) 4.3.0+c7469b2119 fabric-object-builder-api-v1: Fabric Object Builder API (v1) 15.2.1+40875a9319 fabric-particles-v1: Fabric Particles (v1) 4.0.2+6573ed8c19 fabric-recipe-api-v1: Fabric Recipe API (v1) 5.0.14+248df81c19 fabric-registry-sync-v0: Fabric Registry Sync (v0) 5.3.0+b7e751e819 fabric-renderer-api-v1: Fabric Renderer API (v1) 3.4.0+c705a49c19 fabric-renderer-indigo: Fabric Renderer - Indigo 1.7.0+c705a49c19 fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.68+df3654b319 fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.49+73761d2e19 fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 3.1.6+1daea21519 fabric-rendering-v0: Fabric Rendering (v0) 1.1.71+df3654b319 fabric-rendering-v1: Fabric Rendering (v1) 5.0.5+df16efd019 fabric-resource-conditions-api-v1: Fabric Resource Conditions API (v1) 4.3.0+8dc279b119 fabric-resource-loader-v0: Fabric Resource Loader (v0) 1.3.1+5b5275af19 fabric-screen-api-v1: Fabric Screen API (v1) 2.0.25+8b68f1c719 fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.3.89+b559734419 fabric-sound-api-v1: Fabric Sound API (v1) 1.0.23+6573ed8c19 fabric-transfer-api-v1: Fabric Transfer API (v1) 5.4.3+c24bd99419 fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 6.2.0+45b9699719 fabricloader: Fabric Loader 0.16.10 mixinextras: MixinExtras 0.4.1 iris: Iris 1.8.8+mc1.21.1 io_github_douira_glsl-transformer: glsl-transformer 2.0.1 org_anarres_jcpp: jcpp 1.4.14 org_antlr_antlr4-runtime: antlr4-runtime 4.13.1 java: OpenJDK 64-Bit Server VM 21 minecraft: Minecraft 1.21.1 sodium: Sodium 0.6.13+mc1.21.1 xaerominimap: Xaero's Minimap 25.2.6 xaeroworldmap: Xaero's World Map 1.39.9 Loaded Shaderpack: (off) (fallback)