ERROR HEALPOOL ADD-ONS

[12:01:48 ERROR]: Could not pass event UpgradeBuyEvent to BedWars1058-HealPool v1.1
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at com.andrei1058.bedwars.upgrades.TeamUpgrade.doAction(TeamUpgrade.java:119) [BedWars1058.jar:?]
        at com.andrei1058.bedwars.listeners.Inventory.onClick(Inventory.java:155) [BedWars1058.jar:?]
        at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_201]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_201]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1630) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:31) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:9) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_201]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_201]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:714) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:653) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:556) [spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_9_R1/EnumParticle
        at com.andrei1058.bedwars.healpool.Main.onTeamUpgrade(Main.java:59) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor79.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_201]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_201]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1_8_8-minecraft-news.fr.jar:git-Spigot-d97e08b-880a532]
        ... 24 more