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Every error on this site
210 errors
All 210 crash signatures, grouped by what went wrong.
Missing dependencies
7
A library mod is missing (Architectury, Cloth Config, Curios, Placebo…)
ContradictionException — the mod set cannot be solved
Fabric RendererAccess.getRenderer() is null (Missing Indium)
Fabric: incompatible mod set, a required mod is missing
Forge: missing or unsupported mandatory dependencies
Mod requires Fabric API but it is not installed
NullPointerException: Cannot invoke "List.isEmpty()" because "quads" is null
Wrong Minecraft version
28
Attempted to retrieve active rendering plug-in before one was registered
Botania Crash: NoClassDefFoundError TinyPotatoRenderEvent
Crash Entering World: class_1297.method_5765() because "$$1" is null
Crash Joining World: Cannot read field "field_3911" because "this.field_4015.field_1724" is null
Crash Loading World: Cannot invoke LocalPlayer.isSpectator() because this.minecraft.player is null
Crash When Enabling Shaders: NoSuchFieldError: TESSELATION_SHADERS (Iris Flywheel Compat)
Crash When Loading World: ClassNotFoundException: net.coderbot.iris.Iris
Crash on World Load: NoClassDefFoundError: net/coderbot/iris/Iris
Create Crash: NullPointerException in Minecart Controller or Coupling Renderer
Iris & Sodium Mismatch: Mixin transformation of class_7764 failed (Square Text & Crash)
Iris Crash: An Invalid Version of Sodium Is Installed
Iris Shaders Crash on World Load (NoSuchElementException in saveBobbing)
Iris Warning: Unknown variable: BIOME_PALE_GARDEN
Iris and Sodium Version Mismatch (Mixin Transformation of class_7764 Failed)
JEI Crash: NoSuchMethodError getItemListOverlay (Outdated NEI)
Minecraft Crash: java.lang.NoSuchMethodError (Mod or Java Version Mismatch)
Mod is built for a different Minecraft version
NoClassDefFoundError: Sodium VertexBufferWriter (Mod Version Mismatch)
NoClassDefFoundError: Sodium VertexBufferWriter Missing
NoClassDefFoundError: Sodium VertexBufferWriter Missing
NoSuchMethodError in a Minecraft class — mod built against another version
Not Enough Items (NEI) Crash: IllegalAccessError on PotionHelper$MixPredicate
Sodium Crash on World Load: VertexType ClassNotFoundException
Sodium Crash: ClassMetadataNotFoundException CubicSampler$class_4859
Sodium Crash: ClassNotFoundException net/minecraft/class_8819 (Wrong Minecraft Version)
Sodium Crash: NoClassDefFoundError VertexType When Loading World
Sodium Crash: NoSuchMethodError SodiumWorldRenderer.onChunkAdded (Bobby Incompatibility)
java.lang.AbstractMethodError (Mod or API Version Mismatch)
Wrong mod loader
3
AccessWidenerFormatException: Namespace (named) does not match current runtime namespace (intermediary)
Fabric mod dropped into a Forge or NeoForge instance
Forge mod dropped into a Fabric instance (and the other way round)
Mixin failures
10
Critical injection failure — a mixin could not find its target
InvalidMixinException: Mod Mixin Failed to Apply
InvalidMixinException: Unexpecteded ClassMetadataNotFoundException
Mixin Transformation of net.minecraft.client.main.Main Failed
Mixin apply failed — one mod could not patch the game
MixinExtras is missing or too old
MixinTargetAlreadyLoadedException: Required Class Loaded Prematurely
SpongeForge Startup Crash: org.spongepowered.mod.mixin.handler.MixinErrorHandler
java.lang.VerifyError: Bad local variable type (Mixin Bytecode Conflict)
java.lang.VerifyError: Bad type on operand stack
Out of memory
8
Could not reserve enough space for object heap
Minecraft Crash: java.lang.OutOfMemoryError (Heap or Native Memory Exhausted)
OutOfMemoryError: Java heap space
OutOfMemoryError: Metaspace
java.lang.OutOfMemoryError: Failed to allocate bytes (Off-Heap Rendering Memory)
java.lang.OutOfMemoryError: GC overhead limit exceeded
java.lang.OutOfMemoryError: null (LWJGL Native Memory Exhausted)
java.lang.OutOfMemoryError: unable to create new native thread
Graphics and drivers
8
EXCEPTION_ACCESS_VIOLATION in a graphics driver
Flywheel GlException: mapBufferRange(ARRAY_BUFFER) Crash with Create
GLFW error — the driver does not support the required OpenGL version
Iris Crash: Close the existing render pass before performing additional commands
OpenGL Crash: GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
Pixel format not accelerated
Shader Program Linking Failed (Sodium / Iris)
Shader compilation failed
Java version problems
7
A JNI error has occurred — the launcher is using the wrong Java
AppClassLoader cannot be cast to URLClassLoader
Error creating Mixin config: JAVA_16 compatibility level not supported on Java 1.8
MixinInitialisationError: fabric-rendering-data-attachment-v1 (Java 16 Required)
The requested compatibility level JAVA_16 could not be set
UnsupportedClassVersionError — wrong Java version
java.awt.HeadlessException: No X11 DISPLAY variable was set
Exit codes
5
Exit code -1073740791 (0xC0000409) — stack buffer overrun
Exit code -1073741819 (0xC0000005) — access violation
Minecraft exited with code -1
Minecraft exited with code 1
Server exited with code 137 — killed by the system
World and tick crashes
7
Create Contraption Crash: Cannot read field "x" because "mf.axis" is null
IllegalStateException: Invalid pool element found (minecraft:jigsaw)
Missing registry entries — a mod was removed from an existing world
Server thread has not responded — Watchdog shut the server down
Ticking entity / Ticking block entity crash
java.io.EOFException When Loading NBT or Chunk Data
java.lang.IllegalStateException: Entity is already tracked!
Mod conflicts
48
AE2 Terminal Crash with REI: TextField.isFocused() NoSuchMethodError
Applied Energistics 2 Server Startup Crash (WorldData IllegalArgumentException with SpongeForge)
Cannot Get Config Value Before Config Is Loaded
ConcurrentModificationException — two threads touched the same list
Could not execute entrypoint stage 'main'
Crash When Opening Inventory: IllegalArgumentException: Duplicate delegates
Crash When Viewing Fluids: "potionContents" is null in WaterPotionStorage
Crash on Second Launch: "this.uniformCache" is null (Sodium & DashLoader)
Crash: java.lang.IllegalStateException: Already building!
Create & JEI Crash Viewing Mechanical Crafting Recipes (Index 1 Out of Bounds)
ExceptionInInitializerError — a mod failed while loading its own class
Fabric Loader Crash: IllegalArgumentException: can't parse argument number: 4
Fabric Loader Localization.format NumberFormatException on Mod Conflict
Failed to Register Dimension for ID (Dimension ID Conflict)
Fastutil NullPointerException: "this.wrapped" is null (Async Map/Item Modification)
Forge PatchException / Sponge Could Not Apply Patches on Server Startup
IllegalStateException: Accessing LegacyRandomSource from Multiple Threads
Iris Crash: Iris.getPipelineManager() is null During Game Initialization
Iris Crash: Missing elements in vertex: mc_midTexCoord, at_tangent
Iris Shaders & Satin API Crash: Unrecognized RenderLayer Implementation (IrisRenderLayerWrapper)
Iris Shaders Crash When Rendering Entities in Menus (PipelineManager.getPipeline is null)
Iris Shaders Crash in FullyBufferedMultiBufferSource (Null RenderLayer with ETF/EMF)
Iris Shaders Crash: IllegalStateException: Already in a group
Iris Shaders Crash: Missing sampler Sampler1 in GlCommandEncoder
Iris Shaders Crash: java.lang.AssertionError: Can't. (iris$getRenderTarget)
Iris Shaders: Tried to use a destroyed GlResource
JEI Crash: recipeCategories must not be empty
Mod 'architectury' is not available! (IllegalStateException)
Mod is present on one side only (client/server)
NullPointerException: Cannot invoke class_746.method_31548() because this.field_3712.field_1724 is null
NullPointerException: Cannot read field "field_44912" because "this.field_4015.field_1724" is null
OptiFabric Crash: "resourceName" is null During Shader Reload
OptiFine is not compatible with this mod set
REI Failed to Reload ServerDisplayRegistryImpl (GameInstance.getServer() is null)
Roughly Enough Items Crash: Entry type minecraft:item doesn't exist!
Sodium Crash Opening Video Settings: this.applyButton is null
Sodium Crash When Falling Into the Void (ChunkRenderColumn Index -1)
Sodium Crash or Freeze When Joining World: renderSectionManager is null
Sodium Crash: "geometryPlanes" is null in GFNITriggers (Translucent Sorting)
Sodium Crash: BufferUnderflowException in MultiDrawBatch
StackOverflowError — two mods calling each other forever
java.lang.IllegalStateException: BufferBuilder not started
java.lang.IllegalStateException: BufferBuilder was empty
java.lang.IllegalStateException: Not building! (BufferBuilder Render Crash)
java.lang.IllegalStateException: Pose stack not empty
java.lang.IllegalStateException: Rendersystem called from wrong thread
java.lang.NullPointerException: Rendering item
java.lang.NullPointerException: Rendering screen
Server setup
7
Could not initialize class RenderSystem — a client mod is on the server
Failed to setup Fabric server environment
Folia Server Error: IllegalStateException: World mismatch
Folia: Accessing entity state off owning region's thread
IllegalArgumentException: Name and ID cannot both be blank
Scheduling chunk load off-main (Folia Region Thread Error)
You need to agree to the EULA before the server starts
Connection problems
11
Architectury & REI Server Packet Error: Cannot invoke class_8710$class_9154.comp_2242() because "type" is null
Failed to bind to port — something is already using it
IllegalArgumentException: Payload may not be larger than X bytes
Mojang API Rate Limit: Too Many Requests
Outdated client / Outdated server
Read timed out / connection problems while downloading
SSL Certificate Error: PKIX Path Building Failed
SSLHandshakeException: PKIX Path Building Failed (Untrusted Certificate)
SSLHandshakeException: PKIX path building failed
io.netty.util.IllegalReferenceCountException: refCnt: 0
java.net.SocketException: Connection reset
Corrupted files
8
Corrupted Config File (NightConfig ParsingException: Not enough data available)
Corrupted Mod Config File (NightConfig ParsingException)
Corrupted Mod Config File (NightConfig ParsingException: Invalid character)
Fabric Startup Crash: WindowsException (AccessDeniedException or NoSuchFileException)
JsonSyntaxException: Expected BEGIN_OBJECT but was STRING at line 1 column 1
Unable to Launch: ClassNotFoundException FMLTweaker
java.nio.file.NoSuchFileException During Fabric or Iris Startup
zip END header not found — a mod jar is corrupted or half-downloaded
Duplicate mods
1
Duplicate mods found — the same mod is installed twice
Launcher problems
18
ATLauncher Startup Crash: ChunkyException NullPointerException in makeStyleSheet
ClassNotFoundException: net.fabricmc.loader.impl.launch.knot.KnotClient
ClassNotFoundException: net.minecraft.client.main.Main
Fabric Crash: Could Not Create Directory (iris-reserved)
Fabric: Minecraft game provider couldn't locate the game!
Forge Crashes on Startup: Missing TByteObjectHashMap (trove4j Library)
HMCL Crash When Adjusting Download Concurrency Slider
HMCL Crash: .prefWidth : A bound value cannot be set
HMCL Crash: When whenComplete succeeded, Task.exception must be null
HMCL Failed to Check for Update (HTTP Response Code 500)
HMCL FileSystemException: Operation Not Permitted on macOS or Linux
HMCL Launcher Error: SAXParseException in Log4jHandler
HMCL Warning: java.io.IOException: Self verification failed
Launcher Crash: java.lang.InternalError: Should not get here
MultiMC Fails to Launch: Not Enough Arguments (org.multimc.NotFoundException)
SLF4J: No SLF4J providers were found
java.lang.ClassNotFoundException: net.minecraft.client.Minecraft
java.nio.file.AccessDeniedException (File or Folder Access Denied)
Reading the log
20
Fabric Crash: NumberFormatException: For input string: "4 "
Forge LoadingFailedException: Loading errors encountered
Forge Mod Loading Crash (LoaderExceptionModCrash)
Harmless Server Warning: ClassNotFoundException: net/minecraft/class_5616 (registrate-fabric)
InvocationTargetException — the real error is wrapped inside
NullPointerException: "this.cpuVendor" is null (OSHI Warning)
ReportedException: Exception generating new chunk
ReportedException: Rendering screen (GUI Crash)
Roughly Enough Items (REI) AsyncSearchManager CancellationException
Sodium Crash: Exception thrown while executing job (ChunkJobResult)
Sodium Mod Config Not Found (Hidden NeoForge Mod Loading Error)
Unable to load library 'flite' (Linux Narrator Error)
java.lang.ArithmeticException: / by zero (Division by Zero)
java.lang.NullPointerException: Exception in server tick loop
java.lang.NullPointerException: Initializing game
java.lang.NullPointerException: Rendering overlay
java.lang.NullPointerException: Updating screen events
java.lang.NullPointerException: keyPressed event handler
java.lang.NullPointerException: mouseClicked event handler
net.minecraft.ReportedException: mouseClicked event handler
Resource packs
4
CompletionException: RuntimeException: could not reload shaders
Iris Shaders: GLSL Source Pre-Processing Failed
Minecraft Failed to Reload Core Shaders (could not reload shaders)
Resource pack could not be loaded
Data packs
2
Failed to load registries due to above errors
Failed to reload data packs
Performance
3
Fabric ModResolutionException: Mod resolution took too long!
Sodium ArrayIndexOutOfBoundsException in Chunk Rendering (WorldSlice / ChunkStatusTracker)
Sodium Crash When Dragging Scrollbar in Video Settings (PageListWidget$EntryWidget.setSelected)
Account and login
5
Failed to Verify Authentication (AuthenticationUnavailableException)
Failed to Verify Authentication (InvalidCredentialsException: Status: 401)
Failed to Verify Authentication (MinecraftClientHttpException / Status 401)
Failed to Verify Authentication (MinecraftClientHttpException)
HMCL Microsoft Login Failed: Missing client_id (AADSTS900144)
