Question im soooo confused, i dont understand why this error occurs

well I added a few plugins to a server, and of cours created a new world so that it would screw up or anything, but im not sure what this error is, it keeps crashing.... Edit changed the server to bukkit and still no luck

Error (open) Error (close)

---- Minecraft Crash Report ----
// My bad.
Time: 9/16/18 3:46 PM
Description: Exception in server tick loop
java.lang.IllegalArgumentException: ChunkNibbleArrays should be 2048 bytes not: 0
at net.minecraft.server.v1_12_R1.NibbleArray.<init>(NibbleArray.java:14)
at net.minecraft.server.v1_12_R1.ChunkRegionLoader.a(ChunkRegionLoader.java:402)
at net.minecraft.server.v1_12_R1.ChunkRegionLoader.a(ChunkRegionLoader.java:94)
at net.minecraft.server.v1_12_R1.ChunkRegionLoader.loadChunk(ChunkRegionLoader.java:72)
at org.bukkit.craftbukkit.v1_12_R1.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:21)
at org.bukkit.craftbukkit.v1_12_R1.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:1)
at org.bukkit.craftbukkit.v1_12_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:336)
at org.bukkit.craftbukkit.v1_12_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295)
at org.bukkit.craftbukkit.v1_12_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16)
at net.minecraft.server.v1_12_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:137)
at net.minecraft.server.v1_12_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:120)
at net.minecraft.server.v1_12_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:116)
at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:374)
at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:338)
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272)
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545)
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: 1.12.2
Operating System: Linux (amd64) version 4.14.13-1.el7.elrepo.x86_64
Java Version: 1.8.0_171, Oracle Corporation
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 250415384 bytes (238 MB) / 334495744 bytes (319 MB) up to 7635730432 bytes (7282 MB)
JVM Flags: 2 total; -Xmx8192M -Xms128M
IntCache: cache: 0, tcache: 5, allocated: 17, tallocated: 89
CraftBukkit Information:
Running: CraftBukkit version git-Spigot-642f6d2-57ab4cf (MC: 1.12.2) (Implementing API version 1.12.2-R0.1-SNAPSHOT) true
Plugins: { PermissionsEx v1.23.4 ru.tehkode.permissions.bukkit.PermissionsEx [[t3hk0d3, zml]], GroupChatPlus v1.3.0 fr.Patate_Perdue.GroupChatPlus.GroupChatPlus [Patate_Perdue], Vault v1.7.1-b91 net.milkbowl.vault.Vault [cereal, Sleaker, mung3r], AdvancedAchievements v5.9.3 com.hm.achievement.AdvancedAchievements [DarkPyves], EnjinMinecraftPlugin v3.4.3 com.enjin.bukkit.EnjinMinecraftPlugin [www.Enjin.com], GUIShop v6.5.3a com.pablo67340.guishop.main.Main [pablo67340],}
Warnings: DEFAULT
Reload Count: 0
Threads: { TIMED_WAITING Server Infinisleeper: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_12_R1.DedicatedServer$1.run(DedicatedServer.java:60)], TIMED_WAITING Spigot Watchdog Thread: [java.lang.Thread.sleep(Native Method), org.spigotmc.WatchdogThread.run(WatchdogThread.java:92)], WAITING Thread-3: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(LockSupport.java:175), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039), java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442), com.mojang.util.QueueLogAppender.getNextLogEvent(QueueLogAppender.java:77), org.bukkit.craftbukkit.v1_12_R1.util.TerminalConsoleWriterThread.run(TerminalConsoleWriterThread.java:27), java.lang.Thread.run(Thread.java:748)], WAITING Finalizer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164), java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:212)], TIMED_WAITING ObjectCleanerThread: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143), io.netty.util.internal.ObjectCleaner$1.run(ObjectCleaner.java:54), io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30), java.lang.Thread.run(Thread.java:748)], RUNNABLE Spigot Metrics Thread: [java.net.PlainSocketImpl.socketConnect(Native Method), java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350), java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206), java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188), java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392), java.net.Socket.connect(Socket.java:589), java.net.Socket.connect(Socket.java:538), sun.net.NetworkClient.doConnect(NetworkClient.java:180), sun.net.www.http.HttpClient.openServer(HttpClient.java:463), sun.net.www.http.HttpClient.openServer(HttpClient.java:558), sun.net.www.http.HttpClient.<init>(HttpClient.java:242), sun.net.www.http.HttpClient.New(HttpClient.java:339), sun.net.www.http.HttpClient.New(HttpClient.java:357), sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220), sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156), sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050), sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984), sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1334), sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1309), org.spigotmc.Metrics.postPlugin(Metrics.java:430), org.spigotmc.Metrics.access$4(Metrics.java:345), org.spigotmc.Metrics$1.run(Metrics.java:240), java.util.TimerThread.mainLoop(Timer.java:555), java.util.TimerThread.run(Timer.java:505)], RUNNABLE DestroyJavaVM: [], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Thread.java:1610), org.bukkit.craftbukkit.v1_12_R1.CraftCrashReport.call(CraftCrashReport.java:30), net.minecraft.server.v1_12_R1.CrashReportSystemDetails.a(SourceFile:78), net.minecraft.server.v1_12_R1.CrashReport.h(CrashReport.java:128), net.minecraft.server.v1_12_R1.CrashReport.<init>(CrashReport.java:35), net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:597), 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.fill(BufferedInputStream.java:246), java.io.BufferedInputStream.read(BufferedInputStream.java:265), org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:248), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:261), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:198), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:2145), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLineSimple(ConsoleReader.java:3183), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:2333), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:2269), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:2257), net.minecraft.server.v1_12_R1.DedicatedServer$2.run(DedicatedServer.java:87)], RUNNABLE Signal Dispatcher: [], TIMED_WAITING Timer-0: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Timer.java:552), java.util.TimerThread.run(Timer.java:505)], RUNNABLE Netty Epoll Server IO #0: [io.netty.channel.epoll.Native.epollWait0(Native Method), io.netty.channel.epoll.Native.epollWait(Native.java:114), io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:235), io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:252), io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884), java.lang.Thread.run(Thread.java:748)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:502), java.lang.ref.Reference.tryHandlePending(Reference.java:191), java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)], 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)],}
Recent tasks from -31--1{}
Profiler Position: N/A (disabled)
Player Count: 0 / 100; []
Is Modded: Definitely; Server brand changed to 'Spigot'
Type: Dedicated Server (map_server.txt)

I changed the server to bukkit also it didn't help

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

@wnnate

Looks like a chunk for your world is invalid. Try deleting the worlds and let them regenerate, or go back to a backup that you know works.

 

thanks but I got it working again, I removed guishop and it worked, I don't know why that fixed it but it did