Errors on opening the template project

[byeoon]

While following the instructions thoroughly, I was unable to get past the After opening the project, wait while the VPM resolver is downloaded and added to your project. part. Even though the example plugin loads on the toolbar just fine, it seems I don't have access to the Package Maker and Resolver tools. I am using Unity 2019.4.31f1

I get these errors in my console:
Packages\com.vrchat.core.vpm-resolver\Editor\Resolver\Resolver.cs(192,47): error CS0117: 'Client' does not contain a definition for 'Resolve'
Packages\com.vrchat.core.vpm-resolver\Editor\Resolver\ResolverWindow.cs(263,29): error CS0136: A local or parameter named 'package' cannot be declared in this scope because that name is used in an enclosing local scope to define a local or parameter