i was playing and my server crashes

:---- Minecraft Crash Report ----
// You're mean.

Time: 7/19/16 6:43 PM
Description: Watching Server

java.lang.Error
at aid.f(SourceFile:295)
at aid.o(SourceFile:679)
at apj.d(SourceFile:90)
at apj.c(SourceFile:79)
at apj.b(SourceFile:56)
at akf.a(SourceFile:422)
at ls.j(SourceFile:435)
at ls.d(SourceFile:219)
at net.minecraft.server.MinecraftServer.D(SourceFile:618)
at ld.D(SourceFile:338)
at net.minecraft.server.MinecraftServer.C(SourceFile:554)
at net.minecraft.server.MinecraftServer.run(SourceFile:458)
at java.lang.Thread.run(Unknown Source)

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

– Head –
Thread: Server Watchdog
Stacktrace:
at aid.f(SourceFile:295)
at aid.o(SourceFile:679)
at apj.d(SourceFile:90)
at apj.c(SourceFile:79)
at apj.b(SourceFile:56)
at akf.a(SourceFile:422)
at ls.j(SourceFile:435)
at ls.d(SourceFile:219)
at net.minecraft.server.MinecraftServer.D(SourceFile:618)
at ld.D(SourceFile:338)
at net.minecraft.server.MinecraftServer.C(SourceFile:554)

– Thread Dump –
Details:
Threads: "Netty Server IO #2" Id=20 RUNNABLE
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)

• locked io.netty.channel.nio.SelectedSelectionKeySet@746fc6d4
• locked java.util.Collections$UnmodifiableSet@7aa83629
• locked sun.nio.ch.WindowsSelectorImpl@7e97ada4
  at sun.nio.ch.SelectorImpl.select(Unknown Source)
  at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622)
  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310)
  ...

"Netty Server IO #1" Id=19 RUNNABLE (in native)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)

• locked io.netty.channel.nio.SelectedSelectionKeySet@3b953c12
• locked java.util.Collections$UnmodifiableSet@31c614d2
• locked sun.nio.ch.WindowsSelectorImpl@a6465bd
  at sun.nio.ch.SelectorImpl.select(Unknown Source)
  at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622)
  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310)
  ...

"File IO Thread" Id=25 TIMED_WAITING
at java.lang.Thread.sleep(Native Method)
at bbu.c(SourceFile:51)
at bbu.run(SourceFile:30)
at java.lang.Thread.run(Unknown Source)

"Server Watchdog" Id=23 RUNNABLE
at sun.management.ThreadImpl.dumpThreads0(Native Method)
at sun.management.ThreadImpl.dumpAllThreads(Unknown Source)
at le.run(SourceFile:43)
at java.lang.Thread.run(Unknown Source)

"Netty Server IO #0" Id=18 RUNNABLE (in native)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)

• locked io.netty.channel.nio.SelectedSelectionKeySet@49dd13d8
• locked java.util.Collections$UnmodifiableSet@5bbac35d
• locked sun.nio.ch.WindowsSelectorImpl@5a5b2c7c
  at sun.nio.ch.SelectorImpl.select(Unknown Source)
  at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622)
  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310)
  ...

"Server console handler" Id=16 RUNNABLE (in native)
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(Unknown Source)
at java.io.BufferedInputStream.read1(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)

• locked java.io.BufferedInputStream@733bf307
  at sun.nio.cs.StreamDecoder.readBytes(Unknown Source)
  at sun.nio.cs.StreamDecoder.implRead(Unknown Source)
  at sun.nio.cs.StreamDecoder.read(Unknown Source)
• locked java.io.InputStreamReader@52d97d6b
  at java.io.InputStreamReader.read(Unknown Source)
  ...

"DestroyJavaVM" Id=15 RUNNABLE

"Server thread" Id=13 RUNNABLE
at aid.f(SourceFile:295)
at aid.o(SourceFile:679)
at apj.d(SourceFile:90)
at apj.c(SourceFile:79)
at apj.b(SourceFile:56)
at akf.a(SourceFile:422)
at ls.j(SourceFile:435)
at ls.d(SourceFile:219)
...

"Server Infinisleeper" Id=12 TIMED_WAITING
at java.lang.Thread.sleep(Native Method)
at ld$1.run(SourceFile:79)

"Snooper Timer" Id=11 TIMED_WAITING on java.util.TaskQueue@5ff4fc46
at java.lang.Object.wait(Native Method)

• waiting on java.util.TaskQueue@5ff4fc46
  at java.util.TimerThread.mainLoop(Unknown Source)
  at java.util.TimerThread.run(Unknown Source)

"Attach Listener" Id=5 RUNNABLE

"Signal Dispatcher" Id=4 RUNNABLE

"Finalizer" Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@5ccf1308
at java.lang.Object.wait(Native Method)

• waiting on java.lang.ref.ReferenceQueue$Lock@5ccf1308
  at java.lang.ref.ReferenceQueue.remove(Unknown Source)
  at java.lang.ref.ReferenceQueue.remove(Unknown Source)
  at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)

"Reference Handler" Id=2 WAITING on java.lang.ref.Reference$Lock@7040605d
at java.lang.Object.wait(Native Method)

• waiting on java.lang.ref.Reference$Lock@7040605d
  at java.lang.Object.wait(Unknown Source)
  at java.lang.ref.Reference.tryHandlePending(Unknown Source)
  at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)

Stacktrace:
at le.run(SourceFile:59)
at java.lang.Thread.run(Unknown Source)

– System Details –
Details:
Minecraft Version: 1.10.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_91, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 817236784 bytes (779 MB) / 1049624576 bytes (1001 MB) up to 1049624576 bytes (1001 MB)
JVM Flags: 2 total; -Xmx1024M -Xms1024M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Profiler Position: N/A (disabled)
Player Count: 1 / 20; [lu['EpicGamenatorYT'/943, l='world', x=237.83, y=70.05, z=105.28]]
Is Modded: Unknown (can't tell)
Type: Dedicated Server (map_server.txt)