2019.3 Error when Installing HDRP Package

[Poinball]

Hey guys,

I got Unity 2019.3.0a7 for my project and When I get the HDRP Package in the Package manager , I got this Error :

Library\PackageCache\com.unity.render-pipelines.core@6.9.1\Runtime\Volume\VolumeManager.cs(15,25): error CS0433: The type ‘Lazy’ exists in both ‘System.Threading, Version=1.0.2856.102, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ and ‘netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51’

Any idea what is wrong ?
thanks !

[SebLagarde]

Hi.
Currently only 2019.3a12 and package 7.0.1 are usable for the 2019.3 family, any other combinaison could produce error.

Note: 2019.3 family require 7.x.x HDRP package
2019.2 familly use 6.x.x
2019.1 family use 5.x.x

[Poinball]

@SebLagarde

Hi.
Currently only 2019.3a12 and package 7.0.1 are usable for the 2019.3 family, any other combinaison could produce error.

Note: 2019.3 family require 7.x.x HDRP package
2019.2 familly use 6.x.x
2019.1 family use 5.x.x

Hi SebLagarde,

Thanks for your answer,
but there is no unity version 2019.3a12 available. Is it a version that is coming soon ?