Console error

Unknown target reason, please report on the issue tracker
java.lang.Exception
at net.minecraft.server.v1_11_R1.EntityInsentient.setGoalTarget(EntityInsentient.java:136) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-a2af8f0]
at net.minecraft.server.v1_11_R1.EntityInsentient.setGoalTarget(EntityInsentient.java:126) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-a2af8f0]
at io.lumine.xikage.mythicmobs.volatilecode.VolatileCodeEnabled_v1_11_R1.setTarget(VolatileCodeEnabled_v1_11_R1.java:480)...

Console error