Server crashes on stopping

[BlackBaroness]

After i type "stop" to console (plugins stopping without problems)

[14:03:17] [Server thread/INFO]: Saving worlds
[14:03:17] [Server thread/INFO]: Saving chunks for level 'world'/overworld
>
[14:03:23] [Server thread/INFO]: Saving chunks for level 'DIM-1'/the_nether
[14:03:23] [Server thread/INFO]: Saving chunks for level 'DIM1'/the_end
[14:04:20] [Spigot Watchdog Thread/ERROR]: The server has stopped responding!
[14:04:20] [Spigot Watchdog Thread/ERROR]: Spigot version: git-CatServer-1.12.2-3440193 (MC: 1.12.2)
[14:04:20] [Spigot Watchdog Thread/ERROR]: ------------------------------
[14:04:20] [Spigot Watchdog Thread/ERROR]: Server thread dump (Look for plugins here before reporting to Spigot!):
[14:04:20] [Spigot Watchdog Thread/ERROR]: ------------------------------
[14:04:20] [Spigot Watchdog Thread/ERROR]: Current Thread: Server thread
[14:04:20] [Spigot Watchdog Thread/ERROR]:      PID: 22 | Suspended: false | Native: false | State: TIMED_WAITING
[14:04:20] [Spigot Watchdog Thread/ERROR]:      Stack:
[14:04:20] [Spigot Watchdog Thread/ERROR]:              java.lang.Thread.sleep(Native Method)
[14:04:20] [Spigot Watchdog Thread/ERROR]:              net.minecraft.world.storage.ThreadedFileIOBase.func_75734_a(SourceFile:69)
[14:04:20] [Spigot Watchdog Thread/ERROR]:              net.minecraft.world.chunk.storage.AnvilSaveHandler.func_75759_a(AnvilSaveHandler.java:51)
[14:04:20] [Spigot Watchdog Thread/ERROR]:              net.minecraft.world.WorldServer.func_73041_k(WorldServer.java:1478)
[14:04:20] [Spigot Watchdog Thread/ERROR]:              net.minecraft.server.MinecraftServer.func_71260_j(MinecraftServer.java:554)
[14:04:20] [Spigot Watchdog Thread/ERROR]:              net.minecraft.server.MinecraftServer.run(MinecraftServer.java:686)
[14:04:20] [Spigot Watchdog Thread/ERROR]:              java.lang.Thread.run(Unknown Source)
[14:04:20] [Spigot Watchdog Thread/ERROR]: ------------------------------
[14:04:20] [Spigot Watchdog Thread/ERROR]: Entire Thread Dump:
[14:04:21] [Spigot Watchdog Thread/ERROR]: ------------------------------
[14:04:21] [Spigot Watchdog Thread/ERROR]: Current Thread: Java2D Disposer
[14:04:21] [Spigot Watchdog Thread/ERROR]:      PID: 79 | Suspended: false | Native: false | State: WAITING
[14:04:21] [Spigot Watchdog Thread/ERROR]:      Stack:
[14:04:21] [Spigot Watchdog Thread/ERROR]:              java.lang.Object.wait(Native Method)
[14:04:21] [Spigot Watchdog Thread/ERROR]:              java.lang.ref.ReferenceQueue.remove(Unknown Source)
[14:04:21] [Spigot Watchdog Thread/ERROR]:              java.lang.ref.ReferenceQueue.remove(Unknown Source)
[14:04:21] [Spigot Watchdog Thread/ERROR]:              sun.java2d.Disposer.run(Unknown Source)
[14:04:21] [Spigot Watchdog Thread/ERROR]:              java.lang.Thread.run(Unknown Source)
[14:04:21] [Spigot Watchdog Thread/ERROR]: ------------------------------
[14:04:21] [Spigot Watchdog Thread/ERROR]: Current Thread: File IO Thread
[14:04:21] [Spigot Watchdog Thread/ERROR]:      PID: 78 | Suspended: false | Native: false | State: RUNNABLE
[14:04:21] [Spigot Watchdog Thread/ERROR]:      Thread is waiting on monitor(s):
[14:04:21] [Spigot Watchdog Thread/ERROR]:              Locked on:net.minecraft.world.chunk.storage.RegionFile.func_76706_a(RegionFile.java:225)
[14:04:21] [Spigot Watchdog Thread/ERROR]:              Locked on:net.minecraft.world.chunk.storage.RegionFileCache.getChunkOutputStream(RegionFileCache.java:140)
[14:04:21] [Spigot Watchdog Thread/ERROR]:      Stack:
[14:04:21] [Spigot Watchdog Thread/ERROR]:              java.io.RandomAccessFile.write0(Native Method)
[14:04:21] [Spigot Watchdog Thread/ERROR]:              java.io.RandomAccessFile.write(Unknown Source)
[14:04:21] [Spigot Watchdog Thread/ERROR]:              java.io.RandomAccessFile.writeInt(Unknown Source)
[14:04:21] [Spigot Watchdog Thread/ERROR]:              net.minecraft.world.chunk.storage.RegionFile.func_76712_a(RegionFile.java:305)```

[Luohuayu]

Please check the disk IO and ensure enough memory