AttributeError: 'module' object has no attribute 'vtkVolumeTextureMapper3D'

What is this error and how to fix it (in python 3.7.6)?

It looks like this class no longer exists in VTK. It was deprecated in VTK 7 (2015) and finally removed in Oct 2017. I don’t know the replacement off-hand, but it’s probably documented in a release note or in Git.

@TJ_Corona it looks like you added the deprecation. Do you know the replacement?

I believe the replacement is vtkOpenGLGPUVolumeRayCastMapper, but I’d defer to @ken-martin on this one.

yes that is the correct replacement