I use the unity2019.1.14 f1 studying this Tutorial, the official 3 d Beginner to me in the Asset store download import 3 d Beginner: Tutorial Resources that a resource after the import
Library \ PackageCache \ [email protected] \ Runtime \ Timeline \ CinemachineTrack cs (16, 6) : error CS0246: The type or namespace name 'TrackColor' could not be found (are you missing a using directive or an assembly reference?)

Library \ PackageCache \ [email protected] \ Runtime \ Timeline \ CinemachineTrack cs (1, 6) : error CS0246: The type or namespace name 'TrackClipTypeAttribute' could not be found (are you missing a using directive or an assembly reference?)

The Library \ PackageCache \ [email protected] \ Runtime \ Timeline \ CinemachineShot cs (4) 3: The error CS0234: The type or namespace name 'Timeline does not exist in The namespace' UnityEngine '(you missing an assembly reference?)

Cs0426 this error, with several method can well solve the problem, after each operation and a new error