Error Building Player, No RectTransform

Hi, I'm having the issue below when I try to build my game to Android, I'm using Unity 2017.3 (and, this project was building normally in Unity 5.6.0).

How can I fix it?

Error building Player: MissingComponentException: There is no 'RectTransform' attached to the "Missing Prefab (Dummy)" game object, but a script is trying to access it.
You probably need to add a RectTransform to the game object "Missing Prefab (Dummy)". Or your script needs to check if the component is attached before using it.

 

It seems like there's a script on a Dummy gameobject that uses GetComponent<RectTransform>() but there isn't one attached.

 

Yes, but, I already check all the objects of the scene, and looks like everything is fine

 

Is there a script on the Dummy object using GetComponent<RectTransform>()? If so, use

Code (CSharp):

1. if(GetComponent<RectTransform>()!=null)

That way the code won't run if there isn't a RectTransform component.

 

I have no gameobject called "Dummy" on the project.

 

This only happens when trying to build! Never happens in play mode

 

Strangest thing ever. Are you sure you have no Dummy GameObjects, and no Dummy prefabs? Does double-clicking on the error do anything?

 

I don't have any dummy gameobjects or prefabs...

But, Exactly now, I have just put some "if" where I use the rect transforms and now it builds normally...

The strange thing is, in all places I have the RectTransform, I was putting the RectTransform directly on the inspector (not by script), so, there is no way to "don't" found the RectTransform.

Thank you!

 

If you have multiple scenes with UI there should be one that got broken because maybe you delete a prefab of that UI, that thing happened to me right now :S

 

do you have any solution for this?