Same problem here, started today suddenly after not doing any changes to the site at all. Guess I’m rolling back too.
That’s what I did. Problem is the first step is already not doable because the error is not a “file not found” but the one I mentioned earlier (it won’t change the Site adress at all). Anyway, I finished the rest of the steps without changing that and that’s where I’m at the moment, but… yeah, I need to change that.
Regards.