Error when applying my prefab

I'm having trouble applying my prefab. Other prefabs apply normally but when I apply one in specific, my scene manager, I get this error, and it doesn't apply. I've attempted to reimport my assets, restart Unity and everything. I'm using Unity 2018.1.0f2:

Code (CSharp):

1. NullReferenceException: Object reference not set to an instance of an object
2. UnityEditor.PrefabUtility.RegisterNewObjects (System.Collections.Generic.List`1 newHierarchy, System.Collections.Generic.List`1 hierarchy, System.String actionName) (at C:/buildslave/unity/build/Editor/Mono/ImportSettings/PrefabUtility.cs:113)
3. UnityEditor.PrefabUtility.ReplacePrefabWithUndo (UnityEngine.GameObject target) (at C:/buildslave/unity/build/Editor/Mono/ImportSettings/PrefabUtility.cs:217)
4. UnityEditor.GameObjectInspector.DoPrefabButtons (PrefabType prefabType, UnityEngine.GameObject go) (at C:/buildslave/unity/build/Editor/Mono/Inspector/GameObjectInspector.cs:348)
5. UnityEditor.GameObjectInspector.DrawInspector () (at C:/buildslave/unity/build/Editor/Mono/Inspector/GameObjectInspector.cs:261)
6. UnityEditor.GameObjectInspector.OnHeaderGUI () (at C:/buildslave/unity/build/Editor/Mono/Inspector/GameObjectInspector.cs:171)
7. UnityEditor.Editor.DrawHeader () (at C:/buildslave/unity/build/Editor/Mono/Inspector/Editor.cs:428)
8. UnityEditor.InspectorWindow.DrawEditor (UnityEditor.Editor[] editors, Int32 editorIndex, Boolean rebuildOptimizedGUIBlock, System.Boolean& showImportedObjectBarNext, UnityEngine.Rect& importedObjectBarRect) (at C:/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:1167)
9. UnityEditor.InspectorWindow.DrawEditors (UnityEditor.Editor[] editors) (at C:/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:1072)
10. UnityEditor.InspectorWindow.OnGUI () (at C:/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:412)
11. System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
12. Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
13. System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:232)
14. System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115)
15. UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:291)
16. UnityEditor.HostView.Invoke (System.String methodName) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:284)
17. UnityEditor.HostView.InvokeOnGUI (Rect onGUIPosition) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:251)
18.  

 

I am getting the exact same error . Did you find a resolution to the problem

 

Yeah, I updated Unity to the latest version, seemed to fix everything. When I stayed with the same version of unity the issue went away for a day and came back and this repeated like 5 times so I just upgraded completely.

 

This problem is due to a "Missing Reference Script" in your prefab. Somewhere in its hierarchy, you have a Missing Script or a Missing Prefab (in your drag&drops elements, probably).

I've deleted the components with "Missing Reference Script" and set to "None" drag&drop elements in my inspector, reapply, and it worked !