PlayerMoveEvent sending console errors

Code:

 Could not pass event PlayerMoveEvent to JoltItems v1.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[server.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[server.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [server.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:270) [server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInFlying.a(SourceFile:126) [server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInFlying.a(SourceFile:8) [server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [server.jar:git-Spigot-db6de12-18fbb24]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_51]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_51]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [server.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_51]
Caused by: java.lang.NullPointerException
        at io.github.JoltMuz.joltitems.Swifts.onMove(Swifts.java:21) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor200.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_51]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_51]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[server.jar:git-Spigot-db6de12-18fbb24]
        ... 15 more

It's just throwing that stuff in the console. The stuff that I want it to do in OnMove event works completely fine.

Swifts class:

Code:

public class Swifts implements Listener
{
    @EventHandler
    public void onMove(PlayerMoveEvent e)
    {
        Player p = e.getPlayer();

        if (p.getInventory().getBoots().getType() == Material.DIAMOND_BOOTS)
        {

            if(p.getInventory().getBoots().getItemMeta().getDisplayName().equals(ChatColor.RED + ChatColor.BOLD.toString() + "Swifts"))
            {
                p.addPotionEffect(new PotionEffect(PotionEffectType.SPEED, 80, 2));
                p.getWorld().playEffect(p.getLocation(), Effect.COLOURED_DUST, 10);

            }
        }
    }
}

@timtower ?

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

 

AHH so I have to check if Boots are not null before checking the type of boots. It worked! Thank you, you're a genius!