It seems like you're encountering an error in the game Rust. This error message suggests that the game couldn't create a Convex Mesh from the source mesh "ScrapHeliGibs_Part046" because it exceeds the maximum polygon limit of 256.
To resolve this issue, you can try simplifying the mesh of the object causing the error. This can be done by reducing the number of polygons or optimizing the mesh in a 3D modeling software.
Alternatively, you can try reaching out to the game's support team or community forums for further assistance, as they may have more specific solutions or insights into this particular error.