# Error while trying to use \`vtk\_to\_numpy\`

**URL:** https://discourse.vtk.org/t/error-while-trying-to-use-vtk-to-numpy/10290
**Category:** Support
**Tags:** python, code
**Created:** [December 21, 2022, 5:08pm UTC](https://discourse.vtk.org/t/error-while-trying-to-use-vtk-to-numpy/10290 "2022-12-21T17:08:43Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![Deepa](https://discourse.vtk.org/user_avatar/discourse.vtk.org/deepa/32/1680_2.png) [@Deepa](https://discourse.vtk.org/u/Deepa)
#### Post date: [December 26, 2022, 7:19am UTC](https://discourse.vtk.org/t/error-while-trying-to-use-vtk-to-numpy/10290/3 "2022-12-26T07:19:56Z")

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Could you please have a look at  
[Model class 'TransferFunctionModel' from module 'k3d' is loaded but can not be instantiated](https://discourse.vtk.org/t/model-class-transferfunctionmodel-from-module-k3d-is-loaded-but-can-not-be-instantiated/10312) ?

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_[View the full topic](https://discourse.vtk.org/t/error-while-trying-to-use-vtk-to-numpy/10290)._