cho xem log console thử đi
[21:42:17] [Server thread/INFO]: Starting minecraft server version 1.11.2
[21:42:18] [Server thread/INFO]: Loading properties
[21:42:18] [Server thread/INFO]: Default game type: SURVIVAL
[21:42:18] [Server thread/INFO]: This server is running Paper version git-Paper-1104 (MC: 1.11.2) (Implementing API version 1.11.2-R0.1-SNAPSHOT)
[21:42:18] [Server thread/INFO]: Debug logging is disabled
[21:42:18] [Server thread/INFO]: Server Ping Player Sample Count: 12
[21:42:18] [Server thread/INFO]: Using 4 threads for Netty based IO
[21:42:18] [Server thread/INFO]: Generating keypair
[21:42:18] [Server thread/INFO]: Starting Minecraft server on *:25565
[21:42:18] [Server thread/INFO]: Using default channel type
[21:42:19] [Server thread/INFO]: Set PluginClassLoader as parallel capable
[21:42:19] [Server thread/WARN]: [ReflectionHelper] Failed to find version enum for 'org.bukkit.craftbukkit.v1_11_R1'/'v1_11_R1.'
[21:42:19] [Server thread/INFO]: [ReflectionHelper] Generating dynamic constant...
[21:42:19] [Server thread/INFO]: [ReflectionHelper] Version is UNKNOWN (-1)
[21:42:19] [Server thread/ERROR]: Could not load 'plugins\BossBarAPI_v2.4.1.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ExceptionInInitializerError
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[rushline.jar:git-Paper-1104]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java

31) ~[rushline.jar:git-Paper-1104]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:254) [rushline.jar:git-Paper-1104]
at org.bukkit.craftbukkit.v1_11_R1.CraftServer.loadPlugins(CraftServer.java

02) [rushline.jar:git-Paper-1104]
at net.minecraft.server.v1_11_R1.DedicatedServer.init(DedicatedServer.java:208) [rushline.jar:git-Paper-1104]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:612) [rushline.jar:git-Paper-1104]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_291]
Caused by: java.lang.ExceptionInInitializerError
at org.inventivetalent.bossbar.BossBarAPI.<clinit>(BossBarAPI.java:59) ~[?

]
at org.inventivetalent.bossbar.BossBarPlugin.<init>(BossBarPlugin.java

8) ~[?

]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_291]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_291]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_291]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_291]
at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_291]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:77) ~[rushline.jar:git-Paper-1104]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[rushline.jar:git-Paper-1104]
... 6 more
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Could not resolve class for [ResolverQuery{name='org.bukkit.craftbukkit.UNKNOWN.entity.CraftEntity', types=[]}]
at org.inventivetalent.reflection.minecraft.Minecraft.<clinit>(Minecraft.java:64) ~[?

]
at org.inventivetalent.bossbar.BossBarAPI.<clinit>(BossBarAPI.java:59) ~[?

]
at org.inventivetalent.bossbar.BossBarPlugin.<init>(BossBarPlugin.java

8) ~[?

]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_291]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_291]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_291]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_291]
at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_291]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:77) ~[rushline.jar:git-Paper-1104]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[rushline.jar:git-Paper-1104]
... 6 more
Caused by: java.lang.ClassNotFoundException: Could not resolve class for [ResolverQuery{name='org.bukkit.craftbukkit.UNKNOWN.entity.CraftEntity', types=[]}]
at org.inventivetalent.reflection.resolver.ClassResolver.notFoundException(ClassResolver.java:68) ~[?

]
at org.inventivetalent.reflection.resolver.ClassResolver.notFoundException(ClassResolver.java

6) ~[?

]
at org.inventivetalent.reflection.resolver.ResolverAbstract.resolve(ResolverAbstract.java:88) ~[?

]
at org.inventivetalent.reflection.resolver.ClassResolver.resolve(ClassResolver.java:55) ~[?

]
at org.inventivetalent.reflection.resolver.minecraft.OBCClassResolver.resolve(OBCClassResolver.java:46) ~[?

]
at org.inventivetalent.reflection.minecraft.Minecraft.<clinit>(Minecraft.java:62) ~[?

]
at org.inventivetalent.bossbar.BossBarAPI.<clinit>(BossBarAPI.java:59) ~[?

]
at org.inventivetalent.bossbar.BossBarPlugin.<init>(BossBarPlugin.java

8) ~[?

]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_291]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_291]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_291]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_291]
at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_291]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:77) ~[rushline.jar:git-Paper-1104]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[rushline.jar:git-Paper-1104]
... 6 more
[21:42:20] [Server thread/INFO]: [ChatReplace] Loading ChatReplace v1.0.1
[21:42:20] [Server thread/INFO]: [OreGen2] Loading OreGen2 v1.2
[21:42:20] [Server thread/INFO]: [AntiBlockLore] Loading AntiBlockLore v1.0
[21:42:20] [Server thread/INFO]: [KeepItems] Loading KeepItems v1.3.2
[21:42:20] [Server thread/INFO]: [LaggChat] Loading LaggChat v1.3
[21:42:20] [Server thread/INFO]: [TazoNick] Loading TazoNick v1.1.5
[21:42:20] [Server thread/INFO]: [PlaceholderAPI] Loading PlaceholderAPI v2.10.3
[21:42:20] [Server thread/INFO]: [MCSSCommunicator] Loading MCSSCommunicator v10.1
[21:42:20] [Server thread/INFO]: [PlugMan] Loading PlugMan v2.1.6
[21:42:20] [Server thread/INFO]: [tpLogin] Loading tpLogin v1.5.1
[21:42:20] [Server thread/INFO]: [MobSpawnChange] Loading MobSpawnChange v1.2
[21:42:20] [Server thread/INFO]: [GuiCreationTool] Loading GuiCreationTool v4.4
[21:42:20] [Server thread/INFO]: [BloodPlus] Loading BloodPlus v1.1
[21:42:20] [Server thread/INFO]: [DiemDanh] Loading DiemDanh v1.0.1
[21:42:20] [Server thread/INFO]: [LevelUP] Loading LevelUP v1.0
[21:42:20] [Server thread/INFO]: [TimedItem] Loading TimedItem v1.0.2
[21:42:20] [Server thread/INFO]: [UtilitiesZone] Loading UtilitiesZone v1.0.0
[21:42:20] [Server thread/INFO]: [ChatSound] Loading ChatSound v1.0
[21:42:20] [Server thread/INFO]: [BangXepHang] Loading BangXepHang v1.0
[21:42:20] [Server thread/INFO]: [RankTab] Loading RankTab v1.3
[21:42:20] [Server thread/INFO]: [AutoClearChat] Loading AutoClearChat v1.2
[21:42:20] [Server thread/INFO]: [BossBarMessage] Loading BossBarMessage v1.3
[21:42:20] [Server thread/INFO]: [ColoredChat] Loading ColoredChat v0.3
[21:42:20] [Server thread/INFO]: [NoteBlockAPI] Loading NoteBlockAPI v1.4.4
[21:42:20] [Server thread/INFO]: [DropEdit] Loading DropEdit v1.11.12
[21:42:20] [Server thread/INFO]: [MOTD] Loading MOTD v2.3.6
[21:42:20] [Server thread/INFO]: [ViaVersion] Loading ViaVersion v2.1.3
[21:42:20] [Server thread/INFO]: [ViaVersion] ViaVersion 2.1.3 is now loaded, injecting!
[21:42:21] [Server thread/INFO]: [ViaVersion] Loading 1.12.2 -> 1.13 block mapping...
[21:42:21] [Server thread/INFO]: [ViaVersion] Loading 1.12.2 -> 1.13 item mapping...
[21:42:21] [Server thread/INFO]: [ViaVersion] Loading new 1.13 tags...
[21:42:21] [Server thread/INFO]: [ViaVersion] Loading 1.12.2 -> 1.13 enchantment mapping...
[21:42:21] [Server thread/INFO]: [ViaVersion] Loading 1.12.2 -> 1.13 sound mapping...
[21:42:21] [Server thread/INFO]: [ViaVersion] Loading translation mappping
[21:42:21] [Server thread/INFO]: [ViaVersion] Loading 1.13.2 -> 1.14 blockstate mapping...