submit bug

[qq735420530]

in simulacrum if you chosse Bosses invade the map every 10 minutes , the game gets stuck at about the fourth boss spawn.
here's the error log:
[Error: Unity Log] Object RoboBallBossPreDeath(Clone) (UnityEngine.GameObject) should not be instantiated by means other than EffectManager.SpawnEffect. This WILL result in an NRE!!! Use EffectManager.SpawnEffect or don't use EffectComponent!!!!!