I used the vertex tool incorrectly and now my map won't load

[clear lake]

I wanted to do some details for the base of a pillar, so i gave the vertex tool a try. While using it, in some point i merged some vertexes thinking it would make the map run better, and since i did that the map doesn't load when i try to test it. Plz help 🙏

[untold turret]

remake the pillar