Error I found:
DELTATRAVELER Exception Log
--- EXCEPTION ---
NullReferenceException: Object reference not set to an instance of an object
Stack Trace:
EnemyHPBar.StartHP (System.Int32 oldHp, System.Int32 newHp, System.Int32 maxHp, System.Int32 partyMember, System.Int32 width, System.Boolean mercy) (at <b222d083a5fc492ba8a7863ac161c49a>:0)
EnemyBase.AddActPoints (System.Int32 points) (at <b222d083a5fc492ba8a7863ac161c49a>:0)
PeacefulRestStandardAttack.OnDestroy () (at <b222d083a5fc492ba8a7863ac161c49a>:0)
--- MISC ---
Last Scene: Battle (2)
Battle ID: 21 (Spinning Robo, Explosive Oak, Li'l UFO)