Find data: Subsetting query causes "ValueError: setting an array element with a sequence."

@utkarsh.ayachit

Found on MacOS 10.14.6, but I believe this is also happening on Linux. ParaView 5.8.0 binary from paraview.org/downloads

Using the disk_out_ref.ex2 example dataset.

Running the following subset query using Find Data causes the error:

Warning: In /Users/kitware/dashboards/buildbot-slave/a64f5607/build/superbuild/paraview/src/VTKExtensions/ExtractionPython/vtkPythonSelector.cxx, line 76
vtkPythonSelector (0x600006c477a0): Could not invoke 'python_selector.execute()'

Traceback (most recent call last):
  File "/Applications/ParaView-5.8.0.app/Contents/Python/paraview/detail/python_selector.py", line 109, in execute
    insidedness = numpy_support.numpy_to_vtk(maskArray, deep=1, array_type=vtkConstants.VTK_SIGNED_CHAR)
  File "/Applications/ParaView-5.8.0.app/Contents/Python/vtkmodules/util/numpy_support.py", line 170, in numpy_to_vtk
    z_flat = numpy.ravel(z).astype(arr_dtype)
ValueError: setting an array element with a sequence.

Here is a picture of the query: