I'm currently trying to calibrate camera on starling 2 Max, but it seems failing.

Environment

Product: Starling 2 Max 
system-image: 1.8.04-M0054-14.1a-perf
kernel:       #1 SMP PREEMPT Mon Mar 24 22:31:58 UTC 2025 4.19.125
hw platform:  M0054
mach.var:     1.0.1
voxl-suite:   1.5.1

I follow the information on the page below,
https://docs.modalai.com/calibrate-cameras/

and use the chessboard 6x9 (A3 print)
https://raw.githubusercontent.com/opencv/opencv/4.x/doc/pattern.png

and

voxl2:/$ voxl-calibrate-camera tracking_front -f -s 6x9 -l 0.033
Waiting for valid pipe...
Please open voxl-portal in a web browser to view the camera calibrator overlay stream

I can see the overlay on the portal, but end up with the either following case.

1. nothing happens (no output/log on the console)
2. voxl-camera-server freeze (voxl-portal stop showing live feed)

As I'm not sure if I was calibrating camera properly, I'd like to check if there is a way to do it.

Thank you.
Akira