Build failing in Visual Studio 2017

I’m having trouble building in Visual Studio 2017. Not really familiar with VS so it’s probably something simple that I’m missing.

I have cloned the git repo directly in VS from the menu File > New > Repository. And entered the git repo url. Then set Duplicati.GUI.TrayIcon.csproj as the startup item.

Then when I try to build or debug, I keep getting errors like this:
C:\Users\emery\Source\Repos\duplicati\Duplicati\GUI\Duplicati.GUI.TrayIcon\CSC : error CS0006: Metadata file ‘C:\Users\emery\Source\Repos\duplicati\Duplicati\Service\bin\Debug\Duplicati.Service.exe’ could not be found
C:\Users\emery\Source\Repos\duplicati\Duplicati\GUI\Duplicati.GUI.TrayIcon\CSC : error CS0006: Metadata file ‘C:\Users\emery\Source\Repos\duplicati\Duplicati\WindowsService\bin\Debug\Duplicati.WindowsService.exe’ could not be found
C:\Users\emery\Source\Repos\duplicati\Duplicati\GUI\Duplicati.GUI.TrayIcon\CSC : error CS0006: Metadata file ‘C:\Users\emery\Source\Repos\duplicati\Duplicati\Library\SQLiteHelper\bin\Debug\SQLiteHelper.dll’ could not be found

What am I doing wrong?