After moving our Fandom wiki here, this page looks like it doesn't exist but the history is there and the deletion log is empty. Overwriting the current version with an older one won't work, as moving it or deleting it. It's probably an issue happened while exporting/importing the page.
I tried deleting it but I got a message telling me it was too big and I hadn't the permissions to do it, no matter I'm the founder of the wiki with full sysop and bureaucrat rights. Anyway, I guess things happen when moving gigabytes of data...