[2021] Solid Black Loading Screen during Rune Mysteries

I was doing Rune Mysteries and everything was fine until I went through the door after the Rune Guardian.

I ended up in a black void. I was still able to move and Ariane was moving around, but everything but myself and Ariane was solid black. I relogged to try and fix it and I sat on the "Loading - please wait." black screen for several minutes. I tried again twice more, restarting the client once and reinstalling the client the second time.

I've been sitting on that black screen for about 20 minutes now.

EDIT:
I was able to fix it using home teleport hotkeys. By default, that'll be T to open the menu and then any location will do. I think Burthorpe is an option by default. That hotkey is B. Any of them work. V for Varrock, F for Falador, etc. etc. Though W is the wilderness so you probably don't want that.