vtkDemandDrivenPipeline.cxx, line 760 vtkCompositeDataPipeline (000001BFCA350BD0)

https://mayavi.readthedocs.io/en/latest/auto/example_scatter_plot.html
Not sure why this example calling `C:\glr\builds\vtk\vtk-ci-ext\` as default.
```
ERROR: In C:\glr\builds\vtk\vtk-ci-ext\0\Common\ExecutionModel\vtkDemandDrivenPipeline.cxx, line 760
vtkCompositeDataPipeline (000001BFCA350BD0): Input for connection index 0 on input port index 0 for algorithm vtkStructuredGridOutlineFilter(000001BFDEAD3640) is of type vtkPolyData, but a vtkStructuredGrid is required.
```

Start with the Mayavi scatter_plot example linked in the issue and reproduce the reported error. Then inspect vtkDemandDrivenPipeline.cxx around line 760 and trace why vtkStructuredGridOutlineFilter receives vtkPolyData instead of vtkStructuredGrid. Done means the cause is established and the example no longer emits this pipeline error.

Written by the indexing model from the issue text.