The frame is a Scattante Race SL10, according to Google is uses a BB30 bottom bracket. I've never used a press fit BB before, but this appears to be missing something on the drive side. The bearing are indented and the non-drive side has a plastic piece that slides into the shell, I assume it's missing the same piece on the drive side. What is it called and can I buy just that piece?

Drive side

Non-drive side