# AttributeError: 'PVModule' object has no attribute 'XMLHierarchicalBoxDataWriter'

**URL:** https://discourse.paraview.org/t/attributeerror-pvmodule-object-has-no-attribute-xmlhierarchicalboxdatawriter/1754
**Category:** In Situ Support
**Created:** [May 2, 2019, 6:42pm UTC](https://discourse.paraview.org/t/attributeerror-pvmodule-object-has-no-attribute-xmlhierarchicalboxdatawriter/1754 "2019-05-02T18:42:06Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![tesari](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/t/e99b99/32.png) [@tesari](https://discourse.paraview.org/u/tesari)
#### Post date: [May 2, 2019, 6:42pm UTC](https://discourse.paraview.org/t/attributeerror-pvmodule-object-has-no-attribute-xmlhierarchicalboxdatawriter/1754/1 "2019-05-02T18:42:06Z")

</div>

Hi,

I have three, possibly related, questions.

I pass a vtkNonOverlappingAMR object to Catalyst-v5.6.0. Using feslicescript.py, I am able to extract a slice in vtm format.  
Q1: How to save the slice as a .png image?

Q2: I cannot figure out how to extract the mesh. allinputsgridwriter.py and gridwriter.py, both end with the same error:

AttributeError: ‘PVModule’ object has no attribute XMLHierarchicalBoxDataWriter’.

Q3: How to plot over a line?  
I tried “plotOverLine1 = PlotOverLine(Input=paramesh\_chombo\_0050h5,  
Source=‘High Resolution Line Source’)”, but got ‘PVModule has no PlotOverLine’ (or something close).

I guess that the issue is in in my build of Catalyst-v5.6.0-Base-Enable-Python-Essentials-Extras-Rendering-Base on Linux. I did not get any errors or warnings, though.

Could you advice how to troubleshoot these issues, please?

Thanks,  
Ted