---- Minecraft Crash Report ---- // Hey, that tickles! Hehehe! Time: 12/23/19, 3:09 PM Description: Exception in server tick loop java.lang.AssertionError: TRAP at net.minecraft.server.v1_15_R1.ItemStack.checkEmpty(ItemStack.java:86) at net.minecraft.server.v1_15_R1.ItemStack.setCount(ItemStack.java:864) at net.minecraft.server.v1_15_R1.MerchantRecipe.getBuyItem1(MerchantRecipe.java:93) at net.minecraft.server.v1_15_R1.ContainerMerchant.g(ContainerMerchant.java:170) at net.minecraft.server.v1_15_R1.PlayerConnection.a(PlayerConnection.java:747) at net.minecraft.server.v1_15_R1.PacketPlayInTrSel.a(SourceFile:30) at net.minecraft.server.v1_15_R1.PacketPlayInTrSel.a(SourceFile:8) at net.minecraft.server.v1_15_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:19) at net.minecraft.server.v1_15_R1.TickTask.run(SourceFile:18) at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(SourceFile:144) at net.minecraft.server.v1_15_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(SourceFile:118) at net.minecraft.server.v1_15_R1.MinecraftServer.aZ(MinecraftServer.java:917) at net.minecraft.server.v1_15_R1.MinecraftServer.executeNext(MinecraftServer.java:910) at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.awaitTasks(SourceFile:127) at net.minecraft.server.v1_15_R1.MinecraftServer.sleepForTick(MinecraftServer.java:894) at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:827) at java.base/java.lang.Thread.run(Thread.java:834) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- System Details -- Details: Minecraft Version: 1.15.1 Minecraft Version ID: 1.15.1 Operating System: Windows 10 (amd64) version 10.0 Java Version: 11.0.4, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 1085516000 bytes (1035 MB) / 2826960896 bytes (2696 MB) up to 10737418240 bytes (10240 MB) CPUs: 8 JVM Flags: 1 total; -Xmx10G CraftBukkit Information: Running: CraftBukkit version git-Spigot-05bb8bc-8073dbe (MC: 1.15.1) (Implementing API version 1.15.1-R0.1-SNAPSHOT) true Plugins: {} Warnings: DEFAULT Reload Count: 0 Threads: { WAITING chunk IO worker: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), app//net.minecraft.server.v1_15_R1.IOWorker.c(SourceFile:124), app//net.minecraft.server.v1_15_R1.IOWorker.d(SourceFile:134), app//net.minecraft.server.v1_15_R1.IOWorker$$Lambda$2248/0x00000008008bfc40.run(Unknown Source), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], RUNNABLE Signal Dispatcher: [], WAITING poi IO worker: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), app//net.minecraft.server.v1_15_R1.IOWorker.c(SourceFile:124), app//net.minecraft.server.v1_15_R1.IOWorker.d(SourceFile:134), app//net.minecraft.server.v1_15_R1.IOWorker$$Lambda$2248/0x00000008008bfc40.run(Unknown Source), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], WAITING Server-Worker-2: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), java.base@11.0.4/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1628), java.base@11.0.4/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)], WAITING Server-Worker-8: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), java.base@11.0.4/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1628), java.base@11.0.4/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)], RUNNABLE Server console handler: [app//org.fusesource.jansi.internal.Kernel32.ReadConsoleInputW(Native Method), app//org.fusesource.jansi.internal.Kernel32.readConsoleInputHelper(Kernel32.java:761), app//org.fusesource.jansi.internal.Kernel32.readConsoleKeyInput(Kernel32.java:794), app//org.fusesource.jansi.internal.WindowsSupport.readConsoleInput(WindowsSupport.java:97), app//org.bukkit.craftbukkit.libs.jline.WindowsTerminal.readConsoleInput(WindowsTerminal.java:215), app//org.bukkit.craftbukkit.libs.jline.WindowsTerminal.access$000(WindowsTerminal.java:55), app//org.bukkit.craftbukkit.libs.jline.WindowsTerminal$1.read(WindowsTerminal.java:157), app//org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:169), app//org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:137), app//org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:246), app//org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:261), app//org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:198), app//org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:2145), app//org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:2349), app//net.minecraft.server.v1_15_R1.DedicatedServer$2.run(DedicatedServer.java:95)], WAITING Server-Worker-7: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), java.base@11.0.4/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1628), java.base@11.0.4/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)], RUNNABLE Netty Server IO #1: [java.base@11.0.4/sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method), java.base@11.0.4/sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(WindowsSelectorImpl.java:339), java.base@11.0.4/sun.nio.ch.WindowsSelectorImpl.doSelect(WindowsSelectorImpl.java:167), java.base@11.0.4/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:124), java.base@11.0.4/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:136), app//io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756), app//io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:411), app//io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], WAITING Server-Worker-5: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), java.base@11.0.4/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1628), java.base@11.0.4/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)], RUNNABLE Server thread: [java.base@11.0.4/java.lang.Thread.dumpThreads(Native Method), java.base@11.0.4/java.lang.Thread.getAllStackTraces(Thread.java:1657), app//org.bukkit.craftbukkit.v1_15_R1.CraftCrashReport.call(CraftCrashReport.java:33), app//net.minecraft.server.v1_15_R1.CrashReportSystemDetails.a(SourceFile:79), app//net.minecraft.server.v1_15_R1.CrashReport.h(CrashReport.java:71), app//net.minecraft.server.v1_15_R1.CrashReport.(CrashReport.java:35), app//net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:848), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], WAITING chunk IO worker: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), app//net.minecraft.server.v1_15_R1.IOWorker.c(SourceFile:124), app//net.minecraft.server.v1_15_R1.IOWorker.d(SourceFile:134), app//net.minecraft.server.v1_15_R1.IOWorker$$Lambda$2248/0x00000008008bfc40.run(Unknown Source), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], WAITING NonBlockingInputStreamThread: [java.base@11.0.4/java.lang.Object.wait(Native Method), app//org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.run(NonBlockingInputStream.java:278), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], WAITING Server-Worker-3: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), java.base@11.0.4/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1628), java.base@11.0.4/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)], RUNNABLE Netty Server IO #0: [java.base@11.0.4/sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method), java.base@11.0.4/sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(WindowsSelectorImpl.java:339), java.base@11.0.4/sun.nio.ch.WindowsSelectorImpl.doSelect(WindowsSelectorImpl.java:167), java.base@11.0.4/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:124), java.base@11.0.4/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:136), app//io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756), app//io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:411), app//io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], TIMED_WAITING Spigot Watchdog Thread: [java.base@11.0.4/java.lang.Thread.sleep(Native Method), app//org.spigotmc.WatchdogThread.run(WatchdogThread.java:102)], TIMED_WAITING Common-Cleaner: [java.base@11.0.4/java.lang.Object.wait(Native Method), java.base@11.0.4/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155), java.base@11.0.4/jdk.internal.ref.CleanerImpl.run(CleanerImpl.java:148), java.base@11.0.4/java.lang.Thread.run(Thread.java:834), java.base@11.0.4/jdk.internal.misc.InnocuousThread.run(InnocuousThread.java:134)], TIMED_WAITING ObjectCleanerThread: [java.base@11.0.4/java.lang.Object.wait(Native Method), java.base@11.0.4/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155), app//io.netty.util.internal.ObjectCleaner$1.run(ObjectCleaner.java:54), app//io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], RUNNABLE Attach Listener: [], WAITING Snooper Timer: [java.base@11.0.4/java.lang.Object.wait(Native Method), java.base@11.0.4/java.lang.Object.wait(Object.java:328), java.base@11.0.4/java.util.TimerThread.mainLoop(Timer.java:527), java.base@11.0.4/java.util.TimerThread.run(Timer.java:506)], TIMED_WAITING Spigot Metrics Thread: [java.base@11.0.4/java.lang.Object.wait(Native Method), java.base@11.0.4/java.util.TimerThread.mainLoop(Timer.java:553), java.base@11.0.4/java.util.TimerThread.run(Timer.java:506)], WAITING chunk IO worker: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), app//net.minecraft.server.v1_15_R1.IOWorker.c(SourceFile:124), app//net.minecraft.server.v1_15_R1.IOWorker.d(SourceFile:134), app//net.minecraft.server.v1_15_R1.IOWorker$$Lambda$2248/0x00000008008bfc40.run(Unknown Source), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], TIMED_WAITING Server-Worker-4: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.parkUntil(LockSupport.java:275), java.base@11.0.4/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1619), java.base@11.0.4/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)], WAITING TerminalConsoleWriter: [app//org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.print(ConsoleReader.java:3440), app//org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.print(ConsoleReader.java:3458), app//org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.drawLine(ConsoleReader.java:599), app//org.bukkit.craftbukkit.v1_15_R1.util.TerminalConsoleWriterThread.run(TerminalConsoleWriterThread.java:44)], TIMED_WAITING Server Infinisleeper: [java.base@11.0.4/java.lang.Thread.sleep(Native Method), app//net.minecraft.server.v1_15_R1.DedicatedServer$1.run(DedicatedServer.java:69)], WAITING poi IO worker: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), app//net.minecraft.server.v1_15_R1.IOWorker.c(SourceFile:124), app//net.minecraft.server.v1_15_R1.IOWorker.d(SourceFile:134), app//net.minecraft.server.v1_15_R1.IOWorker$$Lambda$2248/0x00000008008bfc40.run(Unknown Source), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], RUNNABLE DestroyJavaVM: [], RUNNABLE Reference Handler: [java.base@11.0.4/java.lang.ref.Reference.waitForReferencePendingList(Native Method), java.base@11.0.4/java.lang.ref.Reference.processPendingReferences(Reference.java:241), java.base@11.0.4/java.lang.ref.Reference$ReferenceHandler.run(Reference.java:213)], WAITING Server-Worker-1: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), java.base@11.0.4/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1628), java.base@11.0.4/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)], WAITING poi IO worker: [java.base@11.0.4/jdk.internal.misc.Unsafe.park(Native Method), java.base@11.0.4/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194), app//net.minecraft.server.v1_15_R1.IOWorker.c(SourceFile:124), app//net.minecraft.server.v1_15_R1.IOWorker.d(SourceFile:134), app//net.minecraft.server.v1_15_R1.IOWorker$$Lambda$2248/0x00000008008bfc40.run(Unknown Source), java.base@11.0.4/java.lang.Thread.run(Thread.java:834)], WAITING Finalizer: [java.base@11.0.4/java.lang.Object.wait(Native Method), java.base@11.0.4/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155), java.base@11.0.4/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:176), java.base@11.0.4/java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:170)],} Recent tasks from 2812-2842{} Force Loaded Chunks: { world: {}, world_nether: {}, world_the_end: {},} Player Count: 1 / 50; [EntityPlayer['Puremin0rez'/244, l='world', x=45.16, y=73.00, z=58.63](Puremin0rez at 45.1590988550724,73.0,58.63390112146572)] Data Packs: vanilla, file/bukkit Is Modded: Definitely; Server brand changed to 'Spigot' Type: Dedicated Server (map_server.txt)