[lvi_sam_visual_odometry-9] process has died [pid 2367, exit code -6,

This error message indicates that the process called "lvi_sam_visual_odometry-9" has unexpectedly terminated or crashed with an exit code of -6. The exact cause of the crash is not clear from this message alone, but it could be due to a variety of factors such as memory issues, segmentation faults, or bugs in the code. To troubleshoot this issue, you may need to gather more information from the system logs or by running the process in a debugger.