issue exporting obj file

ParaView Support
1

Hello,
I am trying to export the top faces of a surface mesh file (obj) format.
for this I am

  1. opening the object in paraview
  2. using the selection tool to select the desired faces
  3. extract selection
  4. extract surface
  5. save data…-> save obj file

but if I open the obj file I think it is corrupted or something. in blender it is empty, and in paraview it crashes paraview without any error
I am doing something wrong? or is this a bug?
here is the obj file FileSender

2

the issue was due to the array of point data, when removing all of them the exported file was okey