---- Minecraft Crash Report ---- // Surprise! Haha. Well, this is awkward. Time: 2026-04-23 12:14:42 Description: Mod loading failures have occurred; consult the issue messages for more details net.neoforged.neoforge.logging.CrashReportExtender$ModLoadingCrashException: Mod loading has failed A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at java.base/java.lang.ClassLoader.defineClass1(Native Method) ~[?:?] {} -- Mod loading issue for: ponder -- Details: Mod file: /C:/Users/********/AppData/Roaming/PrismLauncher/instances/1.21.1 My Server/minecraft/mods/instrumentus-1.21.1-2.8.9.jar#192!/META-INF/jarjar/ponder-neoforge-1.0.82 mc1.21.1.jar Failure message: Ponder (ponder) encountered an error while dispatching the net.neoforged.fml.event.lifecycle.FMLClientSetupEvent event java.lang.IncompatibleClassChangeError: class net.createmod.catnip.levelWrappers.SchematicLevel overrides final method net.minecraft.world.level.Level.getEntitiesOfClass(Ljava/lang/Class;Lnet/minecraft/world/phys/AABB;Ljava/util/function/Predicate;)Ljava/util/List; Mod version: 1.0.82 mc1.21.1 Mod issues URL: https://github.com/Creators-of-Create/Ponder/issues Exception message: java.lang.IncompatibleClassChangeError: class net.createmod.catnip.levelWrappers.SchematicLevel overrides final method net.minecraft.world.level.Level.getEntitiesOfClass(Ljava/lang/Class;Lnet/minecraft/world/phys/AABB;Ljava/util/function/Predicate;)Ljava/util/List; Stacktrace: at java.base/java.lang.ClassLoader.defineClass1(Native Method) ~[?:?] {} at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1027) ~[?:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:196) ~[securejarhandler-3.0.8.jar:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.lambda$findClass$20(ModuleClassLoader.java:298) ~[securejarhandler-3.0.8.jar:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:311) ~[securejarhandler-3.0.8.jar:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:298) ~[securejarhandler-3.0.8.jar:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:214) ~[securejarhandler-3.0.8.jar:?] {} at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] {} at java.base/java.lang.ClassLoader.defineClass1(Native Method) ~[?:?] {} at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1027) ~[?:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:196) ~[securejarhandler-3.0.8.jar:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.lambda$findClass$20(ModuleClassLoader.java:298) ~[securejarhandler-3.0.8.jar:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:311) ~[securejarhandler-3.0.8.jar:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:298) ~[securejarhandler-3.0.8.jar:?] {} at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:214) ~[securejarhandler-3.0.8.jar:?] {} at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] {} at TRANSFORMER/ponder@1.0.82 mc1.21.1/net.createmod.ponder.PonderClient.init(PonderClient.java:32) ~[ponder-neoforge-1.0.82 mc1.21.1.jar#203!/:1.0.82 mc1.21.1] {re:classloading} at TRANSFORMER/ponder@1.0.82 mc1.21.1/net.createmod.ponder.NeoForgePonderClient.init(NeoForgePonderClient.java:49) ~[ponder-neoforge-1.0.82 mc1.21.1.jar#203!/:1.0.82 mc1.21.1] {re:classloading} at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.ConsumerEventHandler.invoke(ConsumerEventHandler.java:27) ~[bus-8.0.5.jar#164!/:?] {} at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:360) ~[bus-8.0.5.jar#164!/:?] {} at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:328) ~[bus-8.0.5.jar#164!/:?] {} at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.ModContainer.acceptEvent(ModContainer.java:158) ~[loader-4.0.42.jar#161!/:4.0] {} at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.ModLoader.lambda$dispatchParallelEvent$4(ModLoader.java:172) ~[loader-4.0.42.jar#161!/:4.0] {re:mixin} at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$7(ModLoader.java:231) ~[loader-4.0.42.jar#161!/:4.0] {re:mixin} at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) ~[?:?] {re:mixin} at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:911) ~[?:?] {} at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483) ~[?:?] {} at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) ~[?:?] {} at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) ~[?:?] {} at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) ~[?:?] {re:mixin,re:computing_frames} at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) ~[?:?] {re:mixin,re:computing_frames} at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) ~[?:?] {} -- 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: 44923440 bytes (42 MiB) / 664797184 bytes (634 MiB) up to 4294967296 bytes (4096 MiB) CPUs: 12 Processor Vendor: AuthenticAMD Processor Name: AMD Ryzen 5 2600 Six-Core Processor Identifier: AuthenticAMD Family 23 Model 8 Stepping 2 Microarchitecture: Zen Frequency (GHz): 3.40 Number of physical packages: 1 Number of physical CPUs: 6 Number of logical CPUs: 12 Graphics card #0 name: NVIDIA GeForce RTX 2070 SUPER Graphics card #0 vendor: NVIDIA Graphics card #0 VRAM (MiB): 8192.00 Graphics card #0 deviceId: VideoController1 Graphics card #0 versionInfo: 32.0.15.9597 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 Memory slot #2 capacity (MiB): 8192.00 Memory slot #2 clockSpeed (GHz): 2.13 Memory slot #2 type: DDR4 Memory slot #3 capacity (MiB): 8192.00 Memory slot #3 clockSpeed (GHz): 2.13 Memory slot #3 type: DDR4 Virtual memory max (MiB): 34735.82 Virtual memory used (MiB): 18379.76 Swap memory total (MiB): 2048.00 Swap memory used (MiB): 156.59 Space in storage for jna.tmpdir (MiB): Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): Space in storage for io.netty.native.workdir (MiB): Space in storage for java.io.tmpdir (MiB): available: 818712.69, total: 953109.00 Space in storage for workdir (MiB): available: 818712.69, total: 953109.00 JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms512m -Xmx4096m ModLauncher: 11.0.5 main.901c6ea8 ModLauncher launch target: forgeclient ModLauncher services: sponge-mixin-0.15.2 mixin.0.8.7.jar mixin PLUGINSERVICE loader-4.0.42.jar slf4jfixer PLUGINSERVICE loader-4.0.42.jar runtime_enum_extender PLUGINSERVICE at-modlauncher-10.0.1.jar accesstransformer PLUGINSERVICE loader-4.0.42.jar runtimedistcleaner PLUGINSERVICE modlauncher-11.0.5.jar mixin TRANSFORMATIONSERVICE modlauncher-11.0.5.jar fml TRANSFORMATIONSERVICE FML Language Providers: javafml@4.0 lowcodefml@4.0 minecraft@4.0 Mod List: cloth-config-neoforge-15.0.128-neoforge.jar |Cloth Config v15 API |cloth_config |15.0.128 |Manifest: NOSIGNATURE flywheel-neoforge-1.21.1-1.0.6-beta-38.jar |Flywheel |flywheel |1.0.6-beta-38 |Manifest: NOSIGNATURE instrumentus-1.21.1-2.8.9.jar |Instrumentus |instrumentus |1.21.1-2.8.9 |Manifest: NOSIGNATURE client-1.21.1-20240808.144430-srg.jar |Minecraft |minecraft |1.21.1 |Manifest: ****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:**** ServerOnly-Performance-Moonrise-NeoForge-0.1.0-bet|Moonrise |moonrise |0.1.0-beta.15 2eae1b|Manifest: NOSIGNATURE neoforge-21.1.227-universal.jar |NeoForge |neoforge |21.1.227 |Manifest: NOSIGNATURE ponder-neoforge-1.0.82 mc1.21.1.jar |Ponder |ponder |1.0.82 mc1.21.1 |Manifest: NOSIGNATURE Crash Report UUID: cbca9bb8-ce72-40a9-b2fe-7aec8fb4846c FML: 4.0.42 NeoForge: 21.1.227 Flywheel Backend: flywheel:off