Hello, I upgraded my project from 2022.3.20f1 to 6000.0.12f1 and got this error “Library/PackageCache/com.unity.xr.arfoundation/Runtime/ARFoundation/ARTrackableManager.cs(42,16): error CS0246: The type or namespace name ‘ReadOnlyList<>’ could not be found (are you missing a using directive or an assembly reference?)”
I’m I missing any steps to fix this? Thank you guys
It sounds like you might not have the correct version of the com.unity.xr.core-utils package (which is where ReadOnlyList should come from). In the Package Manager, do you have version 2.3.0 of “XR Core Utilities”? If not, you may have to install or upgrade it.
In addition, I guess you upgrade from AR Foundation 5 to 6. This can be considered as an upgrade guide in case you will have any other issues during the upgrade process: What's new in version 6.0 | AR Foundation | 6.0.2
Thank you! I got it work