v5.11.0RC1 Rectilinear cannot be displayed in "Slice" mode
[paraview ]vtkDemandDrivenPipeline:776 ERR| vtkPVDataRepresentationPipeline (0x5565003282a0): Input for connection index 0 on input port index 0 for algorithm vtkImageSliceRepresentation (0x5564fd5b7820) is of type vtkRectilinearGrid, but a vtkImageData is required
The Representation mode "Slice" should be either disabled for rectilinear grids, or fixed.