MacBook Air will not update to 10.15.3
My laptop has supposedly downloaded the update and when I click to update now, it says it has to restart my computer, and I allow it. Then it pops up with the black screen, apple icon, loading bar, but it doesn't load and then appears to restart quickly, shows the same screen with the loading bar full, and when I log in again, it says that I still need to update it.
MacBook Air 13", macOS 10.15