I cannot restore my items after my death. The grave resulting from said death does not appear when I use the command '/yigd grave'. The block does exist, but the death does not show up, so I cannot restore my items if the death technically 'does not appear.' Mod version: 2.0.10.

Sounds like there was some kind of runtime error. The backup should generate before the grave, so I'm not fully sure what could have happened. Is there any error message of any kind in your logs?