Beware The Error (-1) of March!

Well, I was going to upload an updated version of my project to Realms, like I always do when I need to, when this error suddenly steps in to spoil the fun, like it often does whenever I'm trying to...

I hope this report finds you amazing techies well, because this time around, I spent about 3 days working on some really cool /function command technology I really want to share with my friends!