This is the error I get when people try and use autosell, can anyone help. [ERROR] Could not pass event BlockBreakEvent to AutoSell v1.6.4 org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at com.vk2gpz.tokenenchant.potions.ExplosivePotion$e.run(ExplosivePotion$e.java:330) [TokenEnchant.jar:?] at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:53) [craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:349) [craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:680) [craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] at java.lang.Thread.run(Thread.java:813) [?:1.8.0_212] Caused by: java.lang.NoClassDefFoundError: org.bukkit.entity.Entity$Spigot at me.clip.autosell.SellHandler.getShop(SellHandler.java:131) ~[?:?] at me.clip.autosell.SellHandler.payPlayer(SellHandler.java:349) ~[?:?] at me.clip.autosell.BlockHandler.handleBlockBreakEvent(BlockHandler.java:185) ~[?:?] at me.clip.autosell.listeners.blockbreak.BlockListenerHighest.onBlockBreak(BlockListenerHighest.java:20) ~[?:?] at sun.reflect.GeneratedMethodAccessor104.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[craftbukkit-1.8.8.jar:git-Bukkit-e1ebe52] ... 11 more