Error when install XR Plugin Management

[Ertewaa]

I am following this course : Unity VR/XR Developer: Make Immersive VIRTUAL REALITY Games and i am using Unity >> 2023.2

When i tried to install XR Plugin Management, this error " Library\PackageCache\com.unity.xr.management@4.4.1\Editor\Metadata\KnownPackages.cs(12,70): error CS0117: ‘BuildTargetGroup’ does not contain a definition for ‘VisionOS’ " comes!

I checked with the packages manager it seems that XR Plugin Management is 4.4.1 and there is no other than 4.4.1 listed there!

Could Anyone help me to fix this error?

[beegeedee]

It is a bug in the 4.4.1 version of the xr interaction toolkit. You have to edit the manifest.json file which is located in one of the project folders and change the version to 4.4.0 and this corrects the problem. I don’t remember which folder exactly but is either packages or config. Ensure unity is closed when you do this then once done, launch unity and the error goes away.