When running the demo program of hello_rover in Unity, the rover will fall continuously through the ground.

[jlu13665925221]

When running the demo program of hello_rover in Unity, the rover will fall continuously through the ground. Furthermore, the rover cannot load its appearance. However, I also conducted tests on the UE and found that the aforementioned issues did not exist. Have any of you encountered such a problem? I need to implement it in Unity. So, does anyone have any solutions?

[jlu13665925221]

Additional note: It seems that the FBX file of the rover is missing in the unity folder. In the robot_rover_fastphysics.jsonc file, the rover model points to /Rover/OffroadCar/SM_Offroad_Body, but there is no such file in the unity folder. Only this file was found in the unreal folder. However, the folder only contains files of the ".uasset" type, and it seems that it cannot be used in Unity.