[18:24:59 ERROR]: Could not pass event PlayerDeathEvent to ProPractice v7.4
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[OldTimesSpigot.jar:1.8.8-R0.1-SNAPSHOT]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:74) ~[OldTimesSpigot.jar:1.8.8-R0.1-SNAPSHOT]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[OldTimesSpigot.jar:1.8.8-R0.1-SNAPSHOT]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) ~[OldTimesSpigot.jar:1.8.8-R0.1-SNAPSHOT]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) ~[OldTimesSpigot.jar:1.8.8-R0.1-SNAPSHOT]
        at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:400) ~[OldTimesSpigot.jar:1.8.8-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_8_R3.EntityPlayer.die(EntityPlayer.java:427) ~[OldTimesSpigot.jar:1.8.8-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_8_R3.EntityLiving.damageEntity(EntityLiving.java:888) ~[OldTimesSpigot.jar:1.8.8-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_8_R3.EntityHuman.damageEntity(EntityHuman.java:806) ~[OldTim