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Game Development

Downloadable scene file doesn't work in Unity 2017.2.0f3

When I tried to load the scene in the new Unity Version I got this error. Is there a way to fix this or is there a new download project? Thanks

error CS1704: An assembly with the same name `UnityEngine.UI' has already been imported. Consider removing one of the references or sign the assembly C:/Program Files/Unity/Editor/Data/UnityExtensions/Unity/GUISystem/UnityEngine.UI.dll (Location of the symbol related to previous error)