Realms error message: "public/m/ does not exist."

I have had previous problems with realms, but this is different. When I click on the Play on Realms button on the main menu, I get to the screen with information about realms just fine. But when I attempt to click the login button in the top right, I am immediately greeted with a completely white page with bold text that says "Not Found", and underneath it smaller text that says "The file public/m/ does not exist". There are absolutely no buttons or ways to get back to the main menu. I have to restart MCPE.