why SFM error?

hi

when I using (Structure From Motion From Multiple Views) Example codes with my pictures it alwys give me this error.

can you help me with this?

[snow John]

Hi，i try to use:

https://au.mathworks.com/help/vision/examples/structure-from-motion-from-multiple-views.html?searchHighlight=Structure%20From%20Motion

Structure From Motion From Multiple Views to estimate the poses of a calibrated camera from a sequence of views, and reconstruct the 3-D structure of the scene up to an unknown scale factor.But i get the same error ,can someone help me.Best wishes!