# An error about using Paraview to display GPRMAX models

**URL:** https://discourse.paraview.org/t/an-error-about-using-paraview-to-display-gprmax-models/13754
**Category:** ParaView Support
**Tags:** python
**Created:** [January 21, 2024, 3:10am UTC](https://discourse.paraview.org/t/an-error-about-using-paraview-to-display-gprmax-models/13754 "2024-01-21T03:10:34Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Keep\_Fighting](https://discourse.paraview.org/user_avatar/discourse.paraview.org/keep_fighting/32/13440_2.png) [@Keep\_Fighting](https://discourse.paraview.org/u/Keep_Fighting)
#### Post date: [January 21, 2024, 3:10am UTC](https://discourse.paraview.org/t/an-error-about-using-paraview-to-display-gprmax-models/13754/1 "2024-01-21T03:10:34Z")

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I installed gprMax\_info.py as a macro in Paraview. However, when I select the macro from the Toolbar I get the following error:

Traceback (most recent call last):  
File “”, line 43, in

TypeError: startswith first arg must be bytes or a tuple of bytes, not str

Can someone please help me with resolving this error?

I appreciate your attention and effort.

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [January 22, 2024, 8:18am UTC](https://discourse.paraview.org/t/an-error-about-using-paraview-to-display-gprmax-models/13754/2 "2024-01-22T08:18:45Z")

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> [@Keep\_Fighting](#):
>
> gprMax\_info.py

What is this macro ?