I get this error 4x while migrating from Meta SDK to this.

Library\PackageCache\com.unity.xr.picoxr@39f2cc8faf\Platform\Scripts\Service\Matchmaking.cs(51,13): error CS0246: The type or namespace name 'KVPairArray' could not be found (are you missing a using directive or an assembly reference?)

I am pretty sure this is because of this earlier error while importing:

GUID [af96c3f14f761724db9f93a693fbad2e] for asset 'Packages/com.unity.xr.picoxr/Platform/Scripts/Models/Common.cs' conflicts with: 'Packages/com.meta.xr.sdk.platform/Scripts/Models/Error.cs' (current owner) We can't assign a new GUID because the asset is in an immutable folder. The asset will be ignored.

It would be great if you could give that one a new GUID or .meta file, so it doesn't collide with Meta SDKs.