Here's the console message

[18:50:29] [Server thread/ERROR]: Could not pass event PlayerInteractEvent to CrazyCrates v1.10.2.2
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:228) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:724) [?:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:52) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:1) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_382]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_382]
    at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at java.lang.Thread.run(Thread.java:750) [?:1.8.0_382]
Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "me.badbones69.crazycrates.api.events.PlayerPrizeEvent.<init>(Lorg/bukkit/entity/Player;Lme/badbones69/crazycrates/api/objects/Crate;Ljava/lang/String;Lme/badbones69/crazycrates/api/objects/Prize;)V" the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) of the current class, me/badbones69/crazycrates/cratetypes/QuickCrate, and the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) for the method's defining class, me/badbones69/crazycrates/api/events/PlayerPrizeEvent, have different Class objects for the type me/badbones69/crazycrates/api/objects/Crate used in the signature
    at me.badbones69.crazycrates.cratetypes.QuickCrate.openCrate(QuickCrate.java:86) ~[?:?]
    at me.badbones69.crazycrates.api.CrazyManager.openCrate(CrazyManager.java:486) ~[?:?]
    at me.badbones69.crazycrates.controllers.CrateControl.onCrateOpen(CrateControl.java:169) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_382]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_382]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_382]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_382]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
    ... 16 more

What's the problem?