Renting Apartments making building disappear

A was renting the Fountainview Penthouse from San Myshuno and separated it into two units. I rented both, and all was fine. Until I justly evicted one of my tenants. I can only think that might've been the issue, because a couple of hours later, even after I continued to solve issues for the other rented unit, the problems started not being solved, even when I hired an expert contractor and the rented apartment disappeared from my rentals, so i couldn't visit.

When I visited by my own, the whole building had disappeared!! I panicked and went into building mode to confirm it. I tried to build on it, but when I got out of the building mode, the screen looked like it'd crash at any moment. Help😰😰😰😰😰