'pytransform3d.visualizer' has no attribute 'Figure'

[sdbhosale]

I installed the pytranform3d in my conda env and was trying to run the example notebook on vis_basis.ipynb from the website. However I am getting
AttributeError: module 'pytransform3d.visualizer' has no attribute 'Figure'

Any reason this would happen? Let me know if I am missing anything? Thank you in advance.

[AlexanderFabisch]

Hi, the 3D visualizer requires an optional dependency: open3d. Please let me know if installing it solves the problem.