I am getting several errors about UI stuff in my error log after upgrading my project.
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Assets\Plugins\Pixel Crushers\Dialogue System\Scripts\UI Subsystem\Unity UI\Selector UI\UsableUnityUI.cs(39,28): error CS0234: The type or namespace name ‘UI’ does not exist in the namespace ‘UnityEngine’ (are you missing an assembly reference?)
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Assets\Plugins\Pixel Crushers\Dialogue System\Scripts\Timeline\Playables\Bark\BarkClip.cs(7,19): error CS0234: The type or namespace name ‘Timeline’ does not exist in the namespace ‘UnityEngine’ (are you missing an assembly reference?)
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and many more errors