My server won't start

[FlappingDonkey35]

I had just recently closed the server and when I went back to start it again, It wouldn't. It would appear as offline, then I clicked start and after a minute or two it still said offline. I also tried force hibernating and repairing the core files, but it still will not start. I don't know what is wrong. Can someone pls help?

[notminehut]

Once your server goes from online to offline, try and grab the logs quickly. Find out how to do that here.

[FlappingDonkey35]

This is what I saw on my latest logs

[ztimhirsch1]

Could you send the crash report that it is talking about?

[FlappingDonkey35]

---- Minecraft Crash Report ----
// Sorry

Time: 10/25/20 7:08 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
    at net.minecraft.server.v1_16_R2.JsonList.load(JsonList.java:192)
    at net.minecraft.server.v1_16_R2.DedicatedPlayerList.x(SourceFile:87)
    at net.minecraft.server.v1_16_R2.DedicatedPlayerList.<init>(SourceFile:24)
    at net.minecraft.server.v1_16_R2.DedicatedServer.init(DedicatedServer.java:155)
    at net.minecraft.server.v1_16_R2.MinecraftServer.w(MinecraftServer.java:939)
    at net.minecraft.server.v1_16_R2.MinecraftServer.lambda$a$0(MinecraftServer.java:177)
    at java.lang.Thread.run(Thread.java:748)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
    Minecraft Version: 1.16.3
    Minecraft Version ID: 1.16.3
    Operating System: Linux (amd64) version 5.4.0-48-generic
    Java Version: 1.8.0_212, IcedTea
    Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), IcedTea
    Memory: 746273952 bytes (711 MB) / 1063256064 bytes (1014 MB) up to 1063256064 bytes (1014 MB)
    CPUs: 2
    JVM Flags: 19 total; -Xms1024M -Xmx1024M -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1
    CraftBukkit Information: 
   Running: Paper version git-Paper-240 (MC: 1.16.3) (Implementing API version 1.16.3-R0.1-SNAPSHOT) false
   Plugins: {}
   Warnings: DEFAULT
   Reload Count: 0
   Threads: { RUNNABLE Signal Dispatcher: [], RUNNABLE DestroyJavaVM: [], TIMED_WAITING Craft Scheduler Thread - 2: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460), java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362), java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624), java.lang.Thread.run(Thread.java:748)], RUNNABLE Log4j2-TF-1-AsyncLogger[AsyncContext@70dea4e]-1: [java.lang.Throwable.getOurStackTrace(Throwable.java:822), java.lang.Throwable.getStackTrace(Throwable.java:816), org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:138), org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:122), org.apache.logging.log4j.core.async.RingBufferLogEvent.getThrownProxy(RingBufferLogEvent.java:330), org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format(ExtendedThrowablePatternConverter.java:61), org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:38), org.apache.logging.log4j.core.layout.PatternLayout$PatternSelectorSerializer.toSerializable(PatternLayout.java:455), org.apache.logging.log4j.core.layout.PatternLayout.toText(PatternLayout.java:232), org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:217), org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:57), org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:177), org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:170), org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:161), org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppender.append(RollingRandomAccessFileAppender.java:218), org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156), org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129), org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120), org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84), org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:448), org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:433), org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:417), org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:79), org.apache.logging.log4j.core.async.AsyncLogger.actualAsyncLog(AsyncLogger.java:337), org.apache.logging.log4j.core.async.RingBufferLogEvent.execute(RingBufferLogEvent.java:161), org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:45), org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:29), com.lmax.disruptor.BatchEventProcessor.processEvents(BatchEventProcessor.java:168), com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:125), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624), java.lang.Thread.run(Thread.java:748)], WAITING Finalizer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:144), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:165), java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:216)], TIMED_WAITING Craft Scheduler Thread - 3: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460), java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362), java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624), java.lang.Thread.run(Thread.java:748)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:502), java.lang.ref.Reference.tryHandlePending(Reference.java:191), java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)], TIMED_WAITING Craft Scheduler Thread - 1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460), java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362), java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624), java.lang.Thread.run(Thread.java:748)], RUNNABLE Server console handler: [java.io.FileInputStream.readBytes(Native Method), java.io.FileInputStream.read(FileInputStream.java:255), java.io.BufferedInputStream.read1(BufferedInputStream.java:284), java.io.BufferedInputStream.read(BufferedInputStream.java:345), sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284), sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326), sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178), java.io.InputStreamReader.read(InputStreamReader.java:184), java.io.BufferedReader.fill(BufferedReader.java:161), java.io.BufferedReader.readLine(BufferedReader.java:324), java.io.BufferedReader.readLine(BufferedReader.java:389), net.minecrell.terminalconsole.SimpleTerminalConsole.readCommands(SimpleTerminalConsole.java:180), net.minecrell.terminalconsole.SimpleTerminalConsole.start(SimpleTerminalConsole.java:143), net.minecraft.server.v1_16_R2.DedicatedServer$1.run(DedicatedServer.java:64)], WAITING Snooper Timer: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:502), java.util.TimerThread.mainLoop(Timer.java:526), java.util.TimerThread.run(Timer.java:505)], TIMED_WAITING process reaper: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460), java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362), java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624), java.lang.Thread.run(Thread.java:748)], TIMED_WAITING Timer hack thread: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_16_R2.SystemUtils$5.run(SystemUtils.java:465)], TIMED_WAITING Craft Scheduler Thread - 0: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460), java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362), java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624), java.lang.Thread.run(Thread.java:748)], WAITING Worker-Main-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(LockSupport.java:175), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039), java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624), java.lang.Thread.run(Thread.java:748)], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Thread.java:1610), org.bukkit.craftbukkit.v1_16_R2.CraftCrashReport.call(CraftCrashReport.java:33), net.minecraft.server.v1_16_R2.CrashReportSystemDetails.a(SourceFile:79), net.minecraft.server.v1_16_R2.CrashReport.i(CrashReport.java:71), net.minecraft.server.v1_16_R2.CrashReport.<init>(CrashReport.java:35), net.minecraft.server.v1_16_R2.MinecraftServer.w(MinecraftServer.java:1031), net.minecraft.server.v1_16_R2.MinecraftServer.lambda$a$0(MinecraftServer.java:177), net.minecraft.server.v1_16_R2.MinecraftServer$$Lambda$3037/433438422.run(Unknown Source), java.lang.Thread.run(Thread.java:748)],}
   
   Force Loaded Chunks: {}
    Data Packs: vanilla, file/bukkit
    Is Modded: Definitely; Server brand changed to 'Paper'
    Type: Dedicated Server (map_server.txt)

[ztimhirsch1]

So this says "Exception in server tick loop". I am no expert but I am guessing that means you changed the randomTickSpeed to a high number. Do you remember doing that?

[FlappingDonkey35]

No, I don't remember doing that.

Is there a way to change it back. 

And will my server start once I do?

[ztimhirsch1]

Like I said, I don't understand logs very much so I am probably wrong on the issue. I would recommend joining the minehut discord and asking for help there/

[FlappingDonkey35]

OK thanks.