unity mars tutorials in Content Manager can't go 8/15

Unity Engine
,
1

hello
it isnt meaning Basic Simulation Environment Pack?
i already installed this but i cant go UI overview 8/15

and

Is there any documentation related to installing Content Manager - post processing?

when i installed, an error occurs every second.

unity ver - 2021.3.32f1
mars - 1.5

thanks

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2

Follow this :

That’s the best solution I found