Crash on instantiation of VCSimpleSession #350

This line is causing my app to crash:

var session: VCSimpleSession = VCSimpleSession(videoSize: CGSize(width: 1280, height: 720), frameRate: 30, bitrate: 1000000, useInterfaceOrientation: false)

Unfortunately nothing is printed in the logs, and this is where the breakpoint is invoked:

I'm not sure how to gather more information about this issue. Any suggestions for how to find what's causing the crash?