Multiple missing reference assembly error occurs for Hololens on installing WMR package

Steps to Repro:
1. Create a new Project
2. File > Build Settings > Switch to UWP platform
3. Window > PackageManager
4. Install WMR Package

Actual Result:
Multiple errors occur for missing reference

Expected Result:
The package should install gracefully

Environment:
Only Windows

Occurring with:
2019.3.0a2, 2019.2.0b1
Package version:
2.0.3, 2.0.2

Note: Earlier versions of the package are not available in 2019.2

Working with:
2019.1.0f2
Package version:
1.0.9

Stack Trace:
Library\PackageCache\com.unity.xr.windowsmr.metro@2.0.3\Runtime\HoloLensInputModule.cs(12,48): error CS0246: The type or namespace name 'StandaloneInputModule' could not be found (are you missing a using directive or an assembly reference?)