1
---- Minecraft Crash Report ----
// Why did you do that?
Time: 2026-09-08 09:09:47
Description: Unexpected error
java.lang.NoClassDefFoundError: com/jozufozu/flywheel/backend/gl/GlStateTracker
at knot//net.minecraft.class_761.handler$cki000$irisflw$renderLayerTail(class_761.java:3455)
at knot//net.minecraft.class_761.method_22710(class_761.java:1265)
at knot//net.minecraft.class_757.method_3188(class_757.java:1110)
at knot//net.minecraft.class_757.method_3192(class_757.java:880)
at knot//net.minecraft.class_310.method_1523(class_310.java:1219)
at knot//net.minecraft.class_310.method_1514(class_310.java:802)
at knot//net.minecraft.client.main.Main.main(Main.java:250)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:517)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:72)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: java.lang.ClassNotFoundException: com.jozufozu.flywheel.backend.gl.GlStateTracker
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:239)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
... 10 more
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Render thread
Stacktrace:
at knot//net.minecraft.class_761.handler$cki000$irisflw$renderLayerTail(class_761.java:3455)
at knot//net.minecraft.class_761.method_22710(class_761.java:1265)
at knot//net.minecraft.class_757.method_3188(class_757.java:1110)
-- Affected level --
Details:
All players: 1 total; [class_746['AndroidTurtle69'/103, l='ClientLevel', x=-0.50, y=94.00, z=40.50]]
Chunk stats: 961, 484
Level dimension: minecraft:overworld
Level spawn location: World: (0,95,32), Section: (at 0,15,0 in 0,5,2; chunk contains blocks 0,-64,32 to 15,319,47), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,-64,0 to 511,319,511)
Level time: 52 game time, 52 day time
Server brand: fabric
Server type: Integrated singleplayer server
Stacktrace:
at knot//net.minecraft.class_638.method_8538(class_638.java:458)
at knot//net.minecraft.class_310.method_1587(class_310.java:2406)
at knot//net.minecraft.class_310.method_1514(class_310.java:826)
at knot//net.minecraft.client.main.Main.main(Main.java:250)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:517)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:72)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
-- Last reload --
Details:
Reload number: 1
Reload reason: initial
Finished: Yes
Packs: vanilla, create:dynamic_data, fabric
-- System Details --
Details:
Minecraft Version: 1.20.1
Minecraft Version ID: 1.20.1
Operating System: Windows 10 (amd64) version 10.0
Java Version: 17.0.15, Microsoft
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
Memory: 1341531992 bytes (1279 MiB) / 4173332480 bytes (3980 MiB) up to 4294967296 bytes (4096 MiB)
CPUs: 12
Processor Vendor: AuthenticAMD
Processor Name: AMD Ryzen 5 3600 6-Core Processor
Identifier: AuthenticAMD Family 23 Model 113 Stepping 0
Microarchitecture: Zen 2
Frequency (GHz): 3.59
Number of physical packages: 1
Number of physical CPUs: 6
Number of logical CPUs: 12
Graphics card #0 name: AMD Radeon RX 6700 XT
Graphics card #0 vendor: Advanced Micro Devices, Inc. (0x1002)
Graphics card #0 VRAM (MB): 4095.00
Graphics card #0 deviceId: 0x73df
Graphics card #0 versionInfo: DriverVersion=32.0.21043.12001
Memory slot #0 capacity (MB): 4096.00
Memory slot #0 clockSpeed (GHz): 2.13
Memory slot #0 type: DDR4
Memory slot #1 capacity (MB): 4096.00
Memory slot #1 clockSpeed (GHz): 2.13
Memory slot #1 type: DDR4
Virtual memory max (MB): 21944.54
Virtual memory used (MB): 19211.83
Swap memory total (MB): 13824.00
Swap memory used (MB): 1391.14
JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx4096m -Xms256m
Fabric Mods:
architectury: Architectury 9.2.14
axiom: Axiom 6.0.5
com_moulberry_axiomclientapi: axiomclientapi 1.0.0
com_moulberry_mixinconstraints: mixinconstraints 1.0.9
lattice: Lattice 1.3.0
beautify: Beautify 2.0.0+1.20.1
biomeswevegone: Oh The Biomes We've Gone 1.8.0
cloth-config: Cloth Config v11 11.1.136
cloth-basic-math: cloth-basic-math 0.6.1
copperagebackport: Copper-Age-Backport 0.1.4
corgilib: CorgiLib 4.0.3.5
com_electronwill_night-config_core: core 3.8.3
com_electronwill_night-config_toml: toml 3.8.3
create: Create 6.0.8.1+build.1744-mc1.20.1
com_google_code_findbugs_jsr305: jsr305 3.0.2
flywheel: Flywheel 1.0.5+1.20.1.build.264
milk: Milk Lib 1.2.60
dripstone_fluid_lib: Dripstone Fluid Lib 3.0.2
ponder: Ponder 1.0.91
javax_annotation_javax_annotation-api: javax.annotation-api 1.3.2
porting_lib_accessors: Porting Lib Accessors 2.3.13+1.20.1
porting_lib_base: Porting Lib Base 2.3.13+1.20.1
porting_lib_attributes: Porting Lib Attributes 2.3.13+1.20.1
porting_lib_common: Porting Lib Common 2.3.13+1.20.1
porting_lib_config: Porting Lib Config 2.3.13+1.20.1
porting_lib_fluids: Porting Lib Fluids 2.3.13+1.20.1
porting_lib_gui_utils: Porting Lib Gui Utils 2.3.13+1.20.1
porting_lib_lazy_registration: Porting Lib Lazy Register 2.3.13+1.20.1
porting_lib_mixin_extensions: Porting Lib Mixin Extensions 2.3.13+1.20.1
porting_lib_utility: Porting Lib Utility 2.3.13+1.20.1
porting_lib_brewing: Porting Lib Brewing 2.3.13+1.20.1
porting_lib_client_events: Porting Lib Client Events 2.3.13+1.20.1
porting_lib_entity: Porting Lib Entity 2.3.13+1.20.1
porting_lib_extensions: Porting Lib Extensions 2.3.13+1.20.1
porting_lib_model_generators: Porting Lib Model Generators 2.3.13+1.20.1
porting_lib_data: Porting Lib Data 2.3.13+1.20.1
porting_lib_model_materials: Porting Lib Model Materials 2.3.13+1.20.1
porting_lib_models: Porting Lib Models 2.3.13+1.20.1
porting_lib_networking: Porting Lib Networking 2.3.13+1.20.1
porting_lib_obj_loader: Porting Lib Obj Loader 2.3.13+1.20.1
porting_lib_core: Porting Lib Core 2.3.13+1.20.1
porting_lib_model_loader: Porting Lib Model Loader 2.3.13+1.20.1
porting_lib_tool_actions: Porting Lib Tool Actions 2.3.13+1.20.1
porting_lib_transfer: Porting Lib Transfer 2.3.13+1.20.1
reach-entity-attributes: Reach Entity Attributes 2.4.0
registrate-fabric: Registrate for Fabric 1.3.79-MC1.20.1
porting_lib_tags: Porting Lib Tags 3.0
porting_lib_gametest: Porting Lib GameTest 2.1.1090+1.20
decorative_blocks: Decorative Blocks 4.1.3
entity_model_features: Entity Model Features 3.3.5
entity_texture_features: Entity Texture Features 7.2.1
evs: Enchanted Vertical Slabs 2.2.1-backport1.20.1
fabric-api: Fabric API 0.92.12+1.20.1
fabric-api-base: Fabric API Base 0.4.32+1802ada577
fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.6.37+1802ada577
fabric-biome-api-v1: Fabric Biome API (v1) 13.0.15+93aa238b77
fabric-block-api-v1: Fabric Block API (v1) 1.0.12+1802ada577
fabric-block-view-api-v2: Fabric BlockView API (v2) 1.0.3+924f046a77
fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.42+1802ada577
fabric-client-tags-api-v1: Fabric Client Tags 1.2.0+238242b777
fabric-command-api-v1: Fabric Command API (v1) 1.2.35+f71b366f77
fabric-command-api-v2: Fabric Command API (v2) 2.2.14+1802ada577
fabric-commands-v0: Fabric Commands (v0) 0.2.52+df3654b377
fabric-containers-v0: Fabric Containers (v0) 0.1.68+df3654b377
fabric-content-registries-v0: Fabric Content Registries (v0) 4.0.13+1802ada577
fabric-convention-tags-v1: Fabric Convention Tags 1.5.6+1802ada577
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.2.20+1802ada577
fabric-data-attachment-api-v1: Fabric Data Attachment API (v1) 1.0.2+de0fd6d177
fabric-data-generation-api-v1: Fabric Data Generation API (v1) 12.4.0+238242b777
fabric-dimensions-v1: Fabric Dimensions API (v1) 2.1.55+1802ada577
fabric-entity-events-v1: Fabric Entity Events (v1) 1.6.1+1c78457f77
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.6.6+13a40c6677
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.64+df3654b377
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.41+1802ada577
fabric-item-api-v1: Fabric Item API (v1) 2.1.29+1802ada577
fabric-item-group-api-v1: Fabric Item Group API (v1) 4.0.14+1802ada577
fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.38+1802ada577
fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.36+df3654b377
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 2.2.23+1802ada577
fabric-loot-api-v2: Fabric Loot API (v2) 1.2.3+1802ada577
fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.1.47+9e7660c677
fabric-message-api-v1: Fabric Message API (v1) 5.1.10+1802ada577
fabric-mining-level-api-v1: Fabric Mining Level API (v1) 2.1.52+1802ada577
fabric-model-loading-api-v1: Fabric Model Loading API (v1) 1.0.4+1802ada577
fabric-models-v0: Fabric Models (v0) 0.4.3+9386d8a777
fabric-networking-api-v1: Fabric Networking API (v1) 1.3.15+0caff8d077
fabric-networking-v0: Fabric Networking (v0) 0.3.55+df3654b377
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 11.1.5+e35120df77
fabric-particles-v1: Fabric Particles (v1) 1.1.3+1802ada577
fabric-recipe-api-v1: Fabric Recipe API (v1) 1.0.25+1802ada577
fabric-registry-sync-v0: Fabric Registry Sync (v0) 2.4.1+4c0a70e677
fabric-renderer-api-v1: Fabric Renderer API (v1) 3.2.2+1802ada577
fabric-renderer-indigo: Fabric Renderer - Indigo 1.5.3+85287f9f77
fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.48+df3654b377
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.39+92a0d36777
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 3.0.29+1802ada577
fabric-rendering-v0: Fabric Rendering (v0) 1.1.51+df3654b377
fabric-rendering-v1: Fabric Rendering (v1) 3.0.10+54550fb677
fabric-resource-conditions-api-v1: Fabric Resource Conditions API (v1) 2.3.9+1802ada577
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.11.12+fb82e9d777
fabric-screen-api-v1: Fabric Screen API (v1) 2.0.9+1802ada577
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.3.34+1802ada577
fabric-sound-api-v1: Fabric Sound API (v1) 1.0.14+1802ada577
fabric-tag-api-v1: Fabric Tag API (v1) 1.3.0+238242b777
fabric-transfer-api-v1: Fabric Transfer API (v1) 3.3.6+8dd72ea377
fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 4.3.2+1802ada577
fabricloader: Fabric Loader 0.19.5
mixinextras: MixinExtras 0.5.5
farmersdelight: Farmer's Delight 1.20.1-1.4.3
forgeconfigapiport: Forge Config API Port 8.0.3
geckolib: GeckoLib 4 4.8.4
com_eliotlash_mclib_mclib: mclib 20
handcrafted: Handcrafted 3.0.6
iris: Iris 1.7.6+mc1.20.1
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
irisflw: Iris Flywheel Compat 1.1.2
java: OpenJDK 64-Bit Server VM 17
kiwi: Kiwi Library 11.10.3+fabric
mcwlights: Macaw's Lights and Lamps 1.1.5
minecraft: Minecraft 1.20.1
ohthetreesyoullgrow: Oh The Trees You'll Grow 1.7.0
particular: Particular Reforged 1.5.7
platform: Platform 1.3.4
resourcefullib: Resourceful Lib 2.1.29
com_teamresourceful_bytecodecs: bytecodecs 1.0.2
com_teamresourceful_yabn: yabn 1.0.3
snowrealmagic: Snow! Real Magic! 10.7.0
sodium: Sodium 0.5.13+mc1.20.1
terrablender: TerraBlender 3.0.1.10
twigs: Twigs 3.1.0
vanillabackport: VanillaBackport 1.1.7.10
mixinsquared: MixinSquared 0.1.1
vinery: [Let's Do] Vinery 1.4.41
Loaded Shaderpack: (off)
Flywheel Backend: flywheel:indirect
Launched Version: fabric-loader-0.19.5-1.20.1
Backend library: LWJGL version 3.3.1 SNAPSHOT
Backend API: AMD Radeon RX 6700 XT GL version 3.2.0 Core Profile Context 26.6.1.260520, ATI Technologies Inc.
Window size: 1024x768
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: fabric
Current Language: en_us
CPU: 12x AMD Ryzen 5 3600 6-Core Processor
Server Running: true
Player Count: 1 / 8; [class_3222['AndroidTurtle69'/103, l='ServerLevel[The World]', x=-0.50, y=94.00, z=40.50]]
Data Packs: vanilla, fabric, create:dynamic_data
Enabled Feature Flags: minecraft:vanilla
World Generation: StableFor immediate assistance, please email our customer support: [email protected]