.umap file not working

I’ve run into a serious problem. I was working in UE5 and had just saved when a breaker tripped in the house and caused the computer to lose power and shut down. When I booted back up, the project opened but my level was gone. I can still see the file in File Explorer but my level which I had been working on for the last two months is not showing. I tried importing it but Unreal said it can’t import it.

Please, I need help as I don’t want to lose my work and I don’t know what to do next.