Exception in UIRootUpdate: System.NullReferenceException: Object reference not set to an instance of an object
[Ref 44D1AE94] Duplicate stacktrace, see ref for original
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch4 (string)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:RimWorld.UIRoot_Play.UIRootUpdate_Patch0 (RimWorld.UIRoot_Play)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Root.Update_Patch2 (Verse.Root)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Root_Play.Update_Patch0 (Verse.Root_Play)

发了，说是有一个异常实体，但找不到