How do I fix this error on Minecraft Java 1.21.1 (Modded)

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Description: Packet handling error java.lang.ArrayIndexOutOfBoundsException: Index 21 out of bounds for length 21 at knot//net.minecraft.class_2945.method_12779(class_2945.java:116) at knot//net.minecraft.class_634.method_11093(class_634.java:553) at knot//net.minecraft.class_2739.method_11808(class_2739.java:54) at knot//net.minecraft.class_2739.method_11054(class_2739.java:12) at knot//net.minecraft.class_634.method_48294(class_634.java:2203) at knot//net.minecraft.class_8042.method_48329(class_8042.java:19) at knot//net.minecraft.class_8042.method_11054(class_8042.java:7) at knot//net.minecraft.class_2600.method_11072(class_2600.java:27) at knot//net.minecraft.class_1255.method_18859(class_1255.java:162) at knot//net.minecraft.class_4093.method_18859(class_4093.java:23) at knot//net.minecraft.class_1255.method_16075(class_1255.java:136) at knot//net.minecraft.class_1255.method_5383(class_1255.java:121) at knot//net.minecraft.class_310.method_1523(class_310.java:1240) at knot//net.minecraft.class_310.method_1514(class_310.java:882) at knot//net.minecraft.client.main.Main.main(Main.java:256) at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at knot//net.minecraft.class_2945.method_12779(class_2945.java:116) at knot//net.minecraft.class_634.method_11093(class_634.java:553) at knot//net.minecraft.class_2739.method_11808(class_2739.java:54) at knot//net.minecraft.class_2739.method_11054(class_2739.java:12) -- Incoming Packet -- Details: Type: clientbound/minecraft:bundle Is Terminal: false Is Skippable: false Stacktrace: at knot//net.minecraft.class_2600.method_59803(class_2600.java:56) at knot//net.minecraft.class_8673.method_60882(class_8673.java:136) at knot//net.minecraft.class_8673.method_59807(class_8673.java:113) at knot//net.minecraft.class_2600.method_11072(class_2600.java:32) at knot//net.minecraft.class_1255.method_18859(class_1255.java:162) at knot//net.minecraft.class_4093.method_18859(class_4093.java:23) at knot//net.minecraft.class_1255.method_16075(class_1255.java:136) at knot//net.minecraft.class_1255.method_5383(class_1255.java:121) at knot//net.minecraft.class_310.method_1523(class_310.java:1240) at knot//net.minecraft.class_310.method_1514(class_310.java:882) at knot//net.minecraft.client.main.Main.main(Main.java:256) at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) -- Connection -- Details: Protocol: play Flow: CLIENTBOUND Server type: OTHER Server brand: fabric -- Cobblemon -- Details: Version: 1.6.1 Is Snapshot: false Git Commit: c66de51 (https://gitlab.com/cable-mc/cobblemon/-/commit/c66de51e39dd5144bde3550f630b58f67a835b65) Branch: HEAD Fabric Mods: architectury: Architectury 13.0.8 athena: Athena 4.0.1 citresewn: CIT Resewn 1.2.2+1.21 citresewn-defaults: CIT Resewn: Defaults 1.2.2+1.21 cobblefurnies: CobbleFurnies 0.5 cobbleloots: Cobblemon: CobbleLoots 2.0.0 cobblemon: Cobblemon 1.6.1+1.21.1 cobblemon_capturexp: Cobblemon Capture EXP 1.6-fabric-1.0.0 cobblemon_move_inspector: Cobblemon Move Inspector 1.2.0 cobblemonboxlink: Cobblemon Box Link 1.0.4 cobblemonrepel: Cobblemon Repel 1.6-1.2 polymer-core: Polymer (Core) 0.9.18+1.21.1 polymer-networking: Polymer (Networking) 0.9.18+1.21.1 polymer-common: Polymer (Common) 0.9.18+1.21.1 packet_tweaker: Packet Tweaker 0.5.5+1.21 polymer-registry-sync-manipulator: Polymer (Registry Sync Manipulator) 0.9.18+1.21.1 server_translations_api: Server Translations API 2.3.1+1.21-pre2 cobblemonridingfabric: Cobblemon Riding Fabric 1.3.7 cobblenav: Cobblenav 2.2.0 dungeons_arise: When Dungeons Arise 2.1.60 euphoria_patcher: Euphoria Patcher 1.5.2-r5.4-fabric io_sigpipe_jbsdiff: jbsdiff 1.0 fabric-api: Fabric API 0.115.5+1.21.1 fabric-api-base: Fabric API Base 0.4.42+6573ed8c19 fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.6.70+b559734419 fabric-biome-api-v1: Fabric Biome API (v1) 13.0.31+d527f9fd19 fabric-block-api-v1: Fabric Block API (v1) 1.0.22+0af3f5a719 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) 8.0.18+b559734419 fabric-convention-tags-v1: Fabric Convention Tags 2.1.4+7f945d5b19 fabric-convention-tags-v2: Fabric Convention Tags (v2) 2.11.0+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) 1.4.2+651db51519 fabric-data-generation-api-v1: Fabric Data Generation API (v1) 20.2.28+16c4ae2519 fabric-dimensions-v1: Fabric Dimensions API (v1) 4.0.0+6fc22b9919 fabric-entity-events-v1: Fabric Entity Events (v1) 1.7.0+2122d82819 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) 2.5.0+01d9a51c19 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) 6.0.13+6573ed8c19 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) 5.2.0+34f5d91419 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) 1.3.88+b559734419 fabric-sound-api-v1: Fabric Sound API (v1) 1.0.23+6573ed8c19 fabric-transfer-api-v1: Fabric Transfer API (v1) 5.4.2+c24bd99419 fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 6.2.0+45b9699719 fabric-language-kotlin: Fabric Language Kotlin 1.13.2+kotlin.2.1.20 org_jetbrains_kotlin_kotlin-reflect: kotlin-reflect 2.1.20 org_jetbrains_kotlin_kotlin-stdlib: kotlin-stdlib 2.1.20 org_jetbrains_kotlin_kotlin-stdlib-jdk7: kotlin-stdlib-jdk7 2.1.20 org_jetbrains_kotlin_kotlin-stdlib-jdk8: kotlin-stdlib-jdk8 2.1.20 org_jetbrains_kotlinx_atomicfu-jvm: atomicfu-jvm 0.27.0 org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm: kotlinx-coroutines-core-jvm 1.10.1 org_jetbrains_kotlinx_kotlinx-coroutines-jdk8: kotlinx-coroutines-jdk8 1.10.1 org_jetbrains_kotlinx_kotlinx-datetime-jvm: kotlinx-datetime-jvm 0.6.2 org_jetbrains_kotlinx_kotlinx-io-bytestring-jvm: kotlinx-io-bytestring-jvm 0.7.0 org_jetbrains_kotlinx_kotlinx-io-core-jvm: kotlinx-io-core-jvm 0.7.0 org_jetbrains_kotlinx_kotlinx-serialization-cbor-jvm: kotlinx-serialization-cbor-jvm 1.8.0 org_jetbrains_kotlinx_kotlinx-serialization-core-jvm: kotlinx-serialization-core-jvm 1.8.0 org_jetbrains_kotlinx_kotlinx-serialization-json-jvm: kotlinx-serialization-json-jvm 1.8.0 fabricloader: Fabric Loader 0.16.13 forgeconfigapiport: Forge Config API Port 21.1.3 com_electronwill_night-config_core: core 3.8.0 com_electronwill_night-config_toml: toml 3.8.0 geckolib: GeckoLib 4 4.7.5.1 glore: Glowing ores 1.4.0 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 loot-table-modifier: Loot Table Modifier 1.1.1 minecraft: Minecraft 1.21.1 more_cobblemon_tweaks: MoreCobblemonTweaks 1.0.3 mr_cobblemon_legendarystructures: Cobblemon: Legends Untold 2.1 mr_extra_eeveelutions: Extra Eeveelutions [Cobblemon] 1.1.1 name_visibility: Better Name Visibility 1.1 owo: oωo 0.12.15.4+1.21 blue_endless_jankson: jankson 1.2.2 io_wispforest_endec: endec 0.1.5.1 io_wispforest_endec_gson: gson 0.1.3.1 io_wispforest_endec_jankson: jankson 0.1.3.1 io_wispforest_endec_netty: netty 0.1.2 patchouli: Patchouli 1.21-87-FABRIC fiber: fiber 0.23.0-2 pokeblocks: Pokeblocks 1.4.0-1.21.1 simpletms: SimpleTMs 2.1.2 sodium: Sodium 0.6.13+mc1.21.1 sophisticatedbackpacks: Sophisticated Backpacks 1.21.1-3.21.1.1.82 sophisticatedcore: Sophisticated Core 1.21.1-1.0.13.1.120 mixinextras: MixinExtras 0.5.0-beta.3 porting_lib_conditions: Porting Lib Conditions 3.1.0-beta.47+1.21.1 porting_lib_core: Porting Lib Core 3.1.0-beta.47+1.21.1 porting_lib_fluids: Porting Lib Fluids 3.1.0-beta.47+1.21.1 porting_lib_item_abilities: Porting Lib Item Abilities 3.1.0-beta.47+1.21.1 porting_lib_lazy_registration: Porting Lib Lazy Register 3.1.0-beta.47+1.21.1 porting_lib_level_events: Porting Lib Level Events 3.1.0-beta.47+1.21.1 porting_lib_loot: Porting Lib Loot 3.1.0-beta.47+1.21.1 porting_lib_model_loader: Porting Lib Model Loader 3.1.0-beta.47+1.21.1 porting_lib_render_types: Porting Lib Render Types 3.1.0-beta.47+1.21.1 porting_lib_transfer: Porting Lib Transfer 3.1.0-beta.47+1.21.1 team_reborn_energy: Energy 4.1.0 trinkets: Trinkets 3.10.0 cardinal-components-base: Cardinal Components API (base) 6.1.0 cardinal-components-entity: Cardinal Components API (entities) 6.1.0 Loaded Shaderpack: ComplementaryReimagined_r5.4 + EuphoriaPatches_1.5.2 Profile: Custom (+22 options changed by user)

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