Essentials Not Working, help please!

Here is my log:

Code:

[19:50:52] [Server thread/INFO]: Starting minecraft server version 1.9.4
[19:50:52] [Server thread/WARN]: To start the server with more ram, launch it as "java -Xmx1024M -Xms1024M -jar minecraft_server.jar"
[19:50:52] [Server thread/INFO]: Loading properties
[19:50:52] [Server console handler/ERROR]: Exception handling console input
java.io.IOException: The handle is invalid
    at java.io.FileInputStream.readBytes(Native Method) ~[?:1.8.0_91]
    at java.io.FileInputStream.read(Unknown Source) ~[?:1.8.0_91]
    at java.io.BufferedInputStream.fill(Unknown Source) ~[?:1.8.0_91]
    at java.io.BufferedInputStream.read(Unknown Source) ~[?:1.8.0_91]
    at org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:248) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:261) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:198) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:2145) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLineSimple(ConsoleReader.java:3183) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:2333) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:2269) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:2257) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.DedicatedServer$2.run(DedicatedServer.java:82) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
[19:50:52] [Server thread/INFO]: Default game type: SURVIVAL
[19:50:52] [Server thread/INFO]: Generating keypair
[19:50:52] [Server thread/INFO]: Starting Minecraft server on *:25565
[19:50:52] [Server thread/INFO]: Using default channel type
[19:50:53] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-d8637df (MC: 1.9.4) (Implementing API version 1.9.4-R0.1-SNAPSHOT)
[19:50:53] [Server thread/INFO]: [PermissionsEx] Loading PermissionsEx v1.23.4
[19:50:53] [Server thread/INFO]: [WorldEdit] Loading WorldEdit v6.1.2;b3fbe8b
[19:50:53] [Server thread/INFO]: [BossShop] Loading BossShop v2.4.8
[19:50:53] [Server thread/INFO]: [Essentials] Loading Essentials v2.13.1
[19:50:53] [Server thread/INFO]: [EssentialsProtect] Loading EssentialsProtect v2.13.1
[19:50:53] [Server thread/INFO]: [EssentialsSpawn] Loading EssentialsSpawn v2.13.1
[19:50:53] [Server thread/INFO]: [ChatFeelings] Loading ChatFeelings v1.6
[19:50:53] [Server thread/INFO]: [EssentialsChat] Loading EssentialsChat v2.13.1
[19:50:53] [Server thread/INFO]: [WorldGuard] Loading WorldGuard v6.1
[19:50:53] [Server thread/INFO]: [EssentialsAntiBuild] Loading EssentialsAntiBuild v2.13.1
[19:50:53] [Server thread/INFO]: [ServerSigns] Loading ServerSigns v4.5.1
[19:50:53] [Server thread/INFO]: Preparing level "world"
[19:50:53] [Server thread/INFO]: Preparing start region for level 0 (Seed: 4621971992082927929)
[19:50:54] [Server thread/INFO]: Preparing spawn area: 17%
[19:50:55] [Server thread/INFO]: Preparing spawn area: 61%
[19:50:56] [Server thread/INFO]: Preparing start region for level 1 (Seed: 4621971992082927929)
[19:50:57] [Server thread/INFO]: Preparing spawn area: 43%
[19:50:58] [Server thread/INFO]: Preparing spawn area: 93%
[19:50:58] [Server thread/INFO]: Preparing start region for level 2 (Seed: 4621971992082927929)
[19:50:58] [Server thread/INFO]: [PermissionsEx] Enabling PermissionsEx v1.23.4
[19:50:58] [Server thread/INFO]: [PermissionsEx] Initializing file backend
[19:50:58] [Server thread/INFO]: [PermissionsEx] Permissions file successfully reloaded
[19:50:58] [Server thread/INFO]: [WorldEdit] Enabling WorldEdit v6.1.2;b3fbe8b
[19:50:58] [Server thread/INFO]: WEPIF: PermissionsEx detected! Using PermissionsEx for permissions.
[19:50:58] [Server thread/INFO]: [WorldEdit] Using com.sk89q.worldedit.bukkit.adapter.impl.Spigot_v1_9_R2 as the Bukkit adapter
[19:50:58] [Server thread/INFO]: [BossShop] Enabling BossShop v2.4.8
[19:50:58] [Server thread/INFO]: [BossShop] Loading data...
[19:50:59] [Server thread/INFO]: [BossShop] Loaded 9 Shops!
[19:50:59] [Server thread/ERROR]: Error occurred while enabling BossShop v2.4.8 (Is it up to date?)
java.lang.NoClassDefFoundError: net/milkbowl/vault/economy/Economy
    at org.black_ixx.bossshop.managers.ClassManager.<init>(ClassManager.java:67) ~[?:?]
    at org.black_ixx.bossshop.BossShop.onEnable(BossShop.java:31) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:292) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.v1_9_R2.CraftServer.loadPlugin(CraftServer.java:347) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.v1_9_R2.CraftServer.enablePlugins(CraftServer.java:319) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.t(MinecraftServer.java:407) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.l(MinecraftServer.java:372) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.a(MinecraftServer.java:327) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.DedicatedServer.init(DedicatedServer.java:240) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:510) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_91]
Caused by: java.lang.ClassNotFoundException: net.milkbowl.vault.economy.Economy
    at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_91]
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_91]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_91]
    ... 13 more
[19:50:59] [Server thread/INFO]: [Essentials] Enabling Essentials v2.13.1
[19:50:59] [Server thread/INFO]: Bukkit version format changed. Version not checked.
[19:50:59] [Server thread/INFO]: git-Bukkit-d8637df (MC: 1.9.4)
[19:50:59] [Server thread/INFO]: 1.9.4-R0.1-SNAPSHOT
[19:50:59] [Server thread/ERROR]: java.lang.NoSuchMethodError: com.google.common.cache.CacheBuilder.maximumSize(I)Lcom/google/common/cache/CacheBuilder;
[19:50:59] [Server thread/ERROR]: Error occurred while enabling Essentials v2.13.1 (Is it up to date?)
java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/entity/Player;
    at com.earth2me.essentials.Essentials.handleCrash(Essentials.java:698) ~[?:?]
    at com.earth2me.essentials.Essentials.onEnable(Essentials.java:256) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:292) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.v1_9_R2.CraftServer.loadPlugin(CraftServer.java:347) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.v1_9_R2.CraftServer.enablePlugins(CraftServer.java:319) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.t(MinecraftServer.java:407) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.l(MinecraftServer.java:372) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.a(MinecraftServer.java:327) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.DedicatedServer.init(DedicatedServer.java:240) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:510) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_91]
[19:50:59] [Server thread/INFO]: [EssentialsProtect] Enabling EssentialsProtect v2.13.1
[19:50:59] [Server thread/INFO]: [EssentialsSpawn] Enabling EssentialsSpawn v2.13.1
[19:50:59] [Server thread/INFO]: [ChatFeelings] Enabling ChatFeelings v1.6
[19:50:59] [Server thread/INFO]: [ChatFeelings] Made By: Zach
[19:50:59] [Server thread/INFO]: [ChatFeelings] ALERT!!! Always check for updates for ChatFeelings at dev.bukkit.org/bukkit-plugins/chatfeelings/
[19:50:59] [Server thread/INFO]: [EssentialsChat] Enabling EssentialsChat v2.13.1
[19:50:59] [Server thread/INFO]: [WorldGuard] Enabling WorldGuard v6.1
[19:50:59] [Server thread/INFO]: [WorldGuard] (world) TNT ignition is PERMITTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world) Lighters are PERMITTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world) Lava fire is blocked.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world) Fire spread is UNRESTRICTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] Loaded configuration for world 'world'
[19:50:59] [Server thread/INFO]: [WorldGuard] (world_nether) TNT ignition is PERMITTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world_nether) Lighters are PERMITTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world_nether) Lava fire is blocked.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world_nether) Fire spread is UNRESTRICTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] Loaded configuration for world 'world_nether'
[19:50:59] [Server thread/INFO]: [WorldGuard] (world_the_end) TNT ignition is PERMITTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world_the_end) Lighters are PERMITTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world_the_end) Lava fire is blocked.
[19:50:59] [Server thread/INFO]: [WorldGuard] (world_the_end) Fire spread is UNRESTRICTED.
[19:50:59] [Server thread/INFO]: [WorldGuard] Loaded configuration for world 'world_the_end'
[19:50:59] [Server thread/INFO]: [WorldGuard] Loading region data...
[19:50:59] [Server thread/INFO]: [EssentialsAntiBuild] Enabling EssentialsAntiBuild v2.13.1
[19:50:59] [Server thread/ERROR]: §4Unknown item 10 in protect.alert.on-placement list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 11 in protect.alert.on-placement list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 46 in protect.alert.on-placement list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 327 in protect.alert.on-placement list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 327 in protect.alert.on-use list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 10 in protect.blacklist.placement list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 11 in protect.blacklist.placement list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 46 in protect.blacklist.placement list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 327 in protect.blacklist.placement list.
[19:50:59] [Server thread/ERROR]: §4Unknown item 327 in protect.blacklist.usage list.
[19:50:59] [Server thread/INFO]: [ServerSigns] Enabling ServerSigns v4.5.1
[19:50:59] [Server thread/INFO]: [ServerSigns] Unable to load Vault dependency - certain economy and permission features will be disabled
[19:50:59] [Server thread/INFO]: [ServerSigns] Please download Vault at http://dev.bukkit.org/server-mods/vault/ for Economy and "Permission grant" support.
[19:50:59] [Server thread/INFO]: [ServerSigns] Version 4.5.1 is now enabled.
[19:50:59] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[19:50:59] [Server thread/INFO]: Done (6.365s)! For help, type "help" or "?"
[19:51:03] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2111ms behind, skipping 42 tick(s)
[19:51:08] [User Authenticator #1/INFO]: UUID of player TomoyasDango is a5df2363-cb12-4579-8284-5aeebff1cc9a
[19:51:08] [Server thread/INFO]: TomoyasDango[/127.0.0.1:61800] logged in with entity id 180 at ([world]246.97548130121538, 69.0, 265.51828670841445)
[19:51:11] [Server thread/WARN]: Essentials userMap not initialized
[19:51:11] [Server thread/ERROR]: Could not pass event PlayerInteractEvent to EssentialsAntiBuild v2.13.1
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.v1_9_R2.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:231) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PlayerInteractManager.a(PlayerInteractManager.java:483) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PlayerConnection.a(PlayerConnection.java:874) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PacketPlayInUseItem.a(SourceFile:55) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PacketPlayInUseItem.a(SourceFile:11) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_91]
    at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_91]
    at net.minecraft.server.v1_9_R2.SystemUtils.a(SourceFile:45) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:683) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:360) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:639) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:543) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_91]
Caused by: java.lang.NullPointerException
    at com.earth2me.essentials.antibuild.EssentialsAntiBuildListener.onPlayerInteract(EssentialsAntiBuildListener.java:232) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_91]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_91]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_91]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    ... 17 more
[19:51:11] [Server thread/WARN]: Essentials userMap not initialized
[19:51:11] [Server thread/ERROR]: Could not pass event PlayerInteractEvent to EssentialsAntiBuild v2.13.1
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at org.bukkit.craftbukkit.v1_9_R2.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:231) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PlayerInteractManager.a(PlayerInteractManager.java:483) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PlayerConnection.a(PlayerConnection.java:874) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PacketPlayInUseItem.a(SourceFile:55) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PacketPlayInUseItem.a(SourceFile:11) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_91]
    at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_91]
    at net.minecraft.server.v1_9_R2.SystemUtils.a(SourceFile:45) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:683) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:360) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:639) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:543) [craftbukkit-1.9.4-R0.1-SNAPSHOT-latest.jar:git-Bukkit-d8637df]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_91]
Caused by: java.lang.NullPointerException
    at com.earth2me.essentials.antibuild.EssentialsAntiBuildListener.onPlayerInteract(EssentialsAntiBuildListener.java:232) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_91]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_91]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_91]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[craftbukkit-1.9.4-R0.1-

I know that is a lot, sorry. I am kind of new to this and i just gave everything.

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

 

I think you simply used the wrong version of essentials. (Not sure).
If you have a 1.9 + server then make sure you use a version for 1.9. Since the update most plugins are not supported anymore in 1.9 servers.

 

@timtower Thanks. I didn't knew what exactly won't work anymore in 1.9

 

first download this modified essentials :https://hub.spigotmc.org/jenkins/job/Spigot-Essentials/
second Download Bukkit Gui Then On The Superstart Tab Select java version and Alternative Path Then IT Will Make A Popup Then Go To C:\\ProgramFiles (x86)\java\jre(ur java version)\bin\java.jar
(dont select the javaw,javacpl,javaws just the java.jar i hope it helps!