Can't build Dedicated Server

I’ve built the dedicated server many times before successfully, but I’m getting errors now all of a sudden. These errors have nothing to do with any of my code, so I’m very confused. I’ve tried deleting intermediate/etc folders and rebuilding with no luck.

Not sure if it’s relevant, but here is my game.build.cs file: http://pasteall.org/869131/csharp

I’m building this for Win64 using Development Server configuration.