hi i had some errors

[isamalhassan1212]

i have unity 2020 , i have started the project i had several error in code :
1- Assets\Scripts\PeopleOcclusion.cs(123,62): error CS0246: The type or namespace name 'XRCameraImageConversionParams' could not be found (are you missing a using directive or an assembly reference?)
2- Assets\Scripts\PeopleOcclusion.cs(122,155): error CS0103: The name 'CameraImageTransformation' does not exist in the current context
3- Assets\Scripts\PeopleOcclusion.cs(122,9): error CS0246: The type or namespace name 'CameraImageTransformation' could not be found (are you missing a using directive or an assembly reference?)
4- Assets\Scripts\PeopleOcclusion.cs(119,110): error CS1503: Argument 4: cannot convert from 'bool' to 'UnityEngine.Experimental.Rendering.TextureCreationFlags'

i have updated all from package manager put i have the same errors can you help please thank you