gotting problems when starting unity 2D gamekit project

Unity Engine
1

I’m beginner

I installed unity 2019.2.0a4

and then download 2D game kit by unity hub.
after ending download. I started it and after a long loading and processing works finally unity project loaded.

but got me some errors about nonexistent packages:

An error occurred while resolving packages:
  Project has invalid dependencies:
    com.unity.package-manager-ui: Package [com.unity.package-manager-ui@2.1.2] cannot be found
  Package com.unity.textmeshpro@2.0.0 has invalid dependencies:
    com.unity.ugui: Package [com.unity.ugui@1.0.0] cannot be found

and another error with this message:

Library\PackageCache\com.unity.textmeshpro@2.0.0\Scripts\Runtime\TMP_UpdateManager.cs(53,17): error CS0123: No overload for 'OnBeginFrameRendering' matches delegate 'Action<Camera[]>'

please someone helps me for solving this problems.

I really like unity and game making.
please help me to continue in my way <3

update:
I clicked on
Help >> Reset packages to defaults

now I have these errors:

Assets\2DGamekit\Scripts\SceneManagement\TransitionPoint.cs(1,7): error CS0246: The type or namespace name 'Cinemachine' could not be found (are you missing a using directive or an assembly reference?)

and

Assets\2DGamekit\Scripts\Utility\AutoCameraSetup.cs(3,7): error CS0246: The type or namespace name 'Cinemachine' could not be found (are you missing a using directive or an assembly reference?)

now what I must do ?

2

Hey, all the projects on the Hub only work on 2019.1. You will need to create a new project in 2019.1 and then download the Game Kit from the Asset Store.

I would also recommend that as a beginner you do not download version of Unity that have an ‘a’ or a ‘b’ in their version names, these are alpha and beta version which may not give you the most comfortable experience.

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