I accidentally removed Main SpriteSheet, sprite missing

I accidentally removed my spritesheet from the art folder. Now in sprite renderer of every sprte it says sprite missing.

I put the spritesheet back in the art folder and sliced it accordingly but it still says sprite missing
Please help.

In the prefabs the sprites used have the same name as in the SpriteSheet

As far as I know, if you don’t have a backup, you’ll need to reassign them manually.