Unjail_Error

22:07:45 [WARNING] Unexpected exception while parsing console command
org.bukkit.command.CommandException: Unhandled exception executing command 'unjail' in plugin Jail v2.1.3
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:636)
        at org.bukkit.craftbukkit.CraftServer.dispatchServerCommand(CraftServer.java:632)
        at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:671)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:640)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:506)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.IllegalArgumentException: Enchantment level is either too low or too high (given 4, bounds are 1 to 3
        at org.bukkit.inventory.ItemStack.addEnchantment(ItemStack.java:299)
        at com.matejdro.bukkit.jail.JailPrisoner.restoreInventory(JailPrisoner.java:574)
        at com.matejdro.bukkit.jail.PrisonerManager.UnJail(PrisonerManager.java:318)
        at com.matejdro.bukkit.jail.JailPrisoner.release(JailPrisoner.java:668)
        at com.matejdro.bukkit.jail.commands.UnJailCommand.run(UnJailCommand.java:36)
        at com.matejdro.bukkit.jail.commands.BaseCommand.execute(BaseCommand.java:30)
        at com.matejdro.bukkit.jail.Jail.onCommand(Jail.java:238)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
        ... 7 more