IndexError: index 268778 is out of bounds for axis 0 with size 0

[houyongkuo]

Hi!
Thanks for your interesting work.
When I was aligning two point clouds with LCD using my demo data, I got the error:
IndexError: index 268778 is out of bounds for axis 0 with size 0.
I don't know how to use my data to finish registration.
Thanks!
Best wishes.

[houyongkuo]

The reason is the lack of RGB attribute in point cloud.