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[Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2007ms or 40 ticks behind

ram:3460mb

code:java -Xmx400M -Xms300M -jar server.jar -nogui
pause
-Xmx400M -Xms300M
-Xmx400M -Xms300M
-Xmx400M -Xms300M
-Xmx400M -Xms300M
-Xmx400M -Xms300M
-Xmx400M -Xms300M
-Xmx400M -Xms300M

#Minecraft server properties
#Fri Aug 07 08:33:08 PDT 2020
spawn-protection=16
max-tick-time=60000
query.port=25565
generator-settings=
sync-chunk-writes=true
force-gamemode=false
allow-nether=true
enforce-whitelist=false
gamemode=survival
broadcast-console-to-ops=true
enable-query=false
player-idle-timeout=0
difficulty=easy
spawn-monsters=true
broadcast-rcon-to-ops=true
op-permission-level=4
pvp=true
entity-broadcast-range-percentage=100
snooper-enabled=true
level-type=default
hardcore=false
enable-status=true
enable-command-block=false
max-players=20
network-compression-threshold=256
resource-pack-sha1=
max-world-size=29999984
function-permission-level=2
rcon.port=25575
server-port=25565
server-ip=
spawn-npcs=true
allow-flight=false
level-name=world
view-distance=10
resource-pack=
spawn-animals=true
white-list=false
rcon.password=
generate-structures=true
online-mode=false
max-build-height=208
level-seed=
prevent-proxy-connections=true
use-native-transport=true
enable-jmx-monitoring=false
motd=A Minecraft Server
enable-rcon=false

crash-report

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Hey, that tickles! Hehehe!
Time: 8/7/20 8:18 AMDescription: Watching Server
java.lang.Error at java.util.zip.ZipFile.getEntry(Native Method) at java.util.zip.ZipFile.getEntry(Unknown Source) at java.util.jar.JarFile.getEntry(Unknown Source) at java.util.jar.JarFile.getJarEntry(Unknown Source) at sun.misc.URLClassPath$JarLoader.getResource(Unknown Source) at sun.misc.URLClassPath.getResource(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at abp.a(SourceFile:161) at zx.c(SourceFile:111) at zx.b(SourceFile:63) at me.a(SourceFile:229) at zu.c(SourceFile:170) at net.minecraft.server.MinecraftServer.b(SourceFile:884) at yd.b(SourceFile:306) at net.minecraft.server.MinecraftServer.a(SourceFile:813) at net.minecraft.server.MinecraftServer.v(SourceFile:672) at net.minecraft.server.MinecraftServer.a(SourceFile:256) at net.minecraft.server.MinecraftServer$$Lambda$3018/179018965.run(Unknown Source) 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 WatchdogStacktrace: at java.util.zip.ZipFile.getEntry(Native Method) at java.util.zip.ZipFile.getEntry(Unknown Source) at java.util.jar.JarFile.getEntry(Unknown Source) at java.util.jar.JarFile.getJarEntry(Unknown Source) at sun.misc.URLClassPath$JarLoader.getResource(Unknown Source) at sun.misc.URLClassPath.getResource(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at abp.a(SourceFile:161) at zx.c(SourceFile:111) at zx.b(SourceFile:63) at me.a(SourceFile:229) at zu.c(SourceFile:170) at net.minecraft.server.MinecraftServer.b(SourceFile:884) at yd.b(SourceFile:306) at net.minecraft.server.MinecraftServer.a(SourceFile:813) at net.minecraft.server.MinecraftServer.v(SourceFile:672) at net.minecraft.server.MinecraftServer.a(SourceFile:256)
-- Thread Dump --Details: Threads: "Netty Server IO #2" Id=35 BLOCKED on java.util.Collections$SynchronizedRandomAccessList@716a1028 owned by "Server thread" Id=20 at java.util.Collections$SynchronizedCollection.add(Unknown Source) - blocked on java.util.Collections$SynchronizedRandomAccessList@716a1028 at zu$1.initChannel(SourceFile:105) at io.netty.channel.ChannelInitializer.initChannel(ChannelInitializer.java:113) at io.netty.channel.ChannelInitializer.handlerAdded(ChannelInitializer.java:105) at io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:637) at io.netty.channel.DefaultChannelPipeline.access$000(DefaultChannelPipeline.java:46) at io.netty.channel.DefaultChannelPipeline$PendingHandlerAddedTask.execute(DefaultChannelPipeline.java:1487) at io.netty.channel.DefaultChannelPipeline.callHandlerAddedForAllHandlers(DefaultChannelPipeline.java:1161) ...

"Netty Server IO #1" Id=34 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$400(Unknown Source) at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source) at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source) - locked io.netty.channel.nio.SelectedSelectionKeySet@7fadf075 - locked java.util.Collections$UnmodifiableSet@7b927b58 - locked sun.nio.ch.WindowsSelectorImpl@3e90fa4e at sun.nio.ch.SelectorImpl.select(Unknown Source) at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62) at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756) ...

"Server Watchdog" Id=33 RUNNABLE at sun.management.ThreadImpl.dumpThreads0(Native Method) at sun.management.ThreadImpl.dumpAllThreads(Unknown Source) at yg.run(SourceFile:45) at java.lang.Thread.run(Unknown Source)

"Netty Server IO #0" Id=26 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$400(Unknown Source) at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source) at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source) - locked io.netty.channel.nio.SelectedSelectionKeySet@1fda46e4 - locked java.util.Collections$UnmodifiableSet@fe42332 - locked sun.nio.ch.WindowsSelectorImpl@6744c12d at sun.nio.ch.SelectorImpl.select(Unknown Source) at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62) at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756) ...

"ObjectCleanerThread" Id=25 TIMED_WAITING on java.lang.ref.ReferenceQueue$Lock@5ebf0501 at java.lang.Object.wait(Native Method) - waiting on java.lang.ref.ReferenceQueue$Lock@5ebf0501 at java.lang.ref.ReferenceQueue.remove(Unknown Source) at io.netty.util.internal.ObjectCleaner$1.run(ObjectCleaner.java:54) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Unknown Source)

"Server console handler" Id=24 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@131f9554 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@3d4cc9b6 at java.io.InputStreamReader.read(Unknown Source) ...

"DestroyJavaVM" Id=23 RUNNABLE

"Server thread" Id=20 RUNNABLE at java.util.zip.ZipFile.getEntry(Native Method) at java.util.zip.ZipFile.getEntry(Unknown Source) - locked java.util.jar.JarFile@7c402a9b at java.util.jar.JarFile.getEntry(Unknown Source) at java.util.jar.JarFile.getJarEntry(Unknown Source) at sun.misc.URLClassPath$JarLoader.getResource(Unknown Source) at sun.misc.URLClassPath.getResource(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) ...

"Snooper Timer" Id=21 WAITING on java.util.TaskQueue@352b3420 at java.lang.Object.wait(Native Method) - waiting on java.util.TaskQueue@352b3420 at java.lang.Object.wait(Unknown Source) at java.util.TimerThread.mainLoop(Unknown Source) at java.util.TimerThread.run(Unknown Source)

"Timer hack thread" Id=16 TIMED_WAITING at java.lang.Thread.sleep(Native Method) at v$2.run(SourceFile:524)

"Attach Listener" Id=5 RUNNABLE

"Signal Dispatcher" Id=4 RUNNABLE

"Finalizer" Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@6e714a4a at java.lang.Object.wait(Native Method) - waiting on java.lang.ref.ReferenceQueue$Lock@6e714a4a 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$Lock@1318a1ed at java.lang.Object.wait(Native Method) - waiting on java.lang.ref.Reference$Lock@1318a1ed 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 yg.run(SourceFile:61) at java.lang.Thread.run(Unknown Source)
-- System Details --Details: Minecraft Version: 1.16.1 Minecraft Version ID: 1.16.1 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_261, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 68556496 bytes (65 MB) / 417333248 bytes (398 MB) up to 417333248 bytes (398 MB) CPUs: 4 JVM Flags: 2 total; -Xmx400M -Xms300M Player Count: 0 / 20; [] Data Packs: vanilla Is Modded: Unknown (can't tell) Type: Dedicated Server (map_server.txt)

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