Scan WhatsApp QR code from device with broken screen to access WhatsApp Web

I need to get a bunch of WhatsApp contacts off my phone. However, I can't see anything on the screen. The phone still works. I tried to get it into debugging through USB mode but I can't see anything and is pretty much impossible. I need a way to either mirror the phone to PC without being able to interact with the device or retrieve all my WhatsApp contacts via USB.