Tracking camera calibration not progressing

  • Hello, I tried to calibrate the tracking camera using a 4x7 checkerboard with side lengths of 4 cm. I launched voxl-portal to view the camera calibration overlay. Then I placed the checkerboard in various positions and orientations within the red box overlayed on the tracking camera image. However, the calibration process does not progress. I never receive a green (overlay) box and the process remains at 0%.

    What should I do to solve this issue?

    Command used:
    voxl-calibrate-camera tracking -f -l 0.04 -s 4x7

    I followed the calibrate camera instructions from here:

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