# LightViz launching not working

**URL:** https://discourse.paraview.org/t/lightviz-launching-not-working/4624
**Category:** Web Support
**Created:** [June 19, 2020, 2:20pm UTC](https://discourse.paraview.org/t/lightviz-launching-not-working/4624 "2020-06-19T14:20:39Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![emmanuel\_madarassou1](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/e/67e7ee/32.png) [@emmanuel\_madarassou1](https://discourse.paraview.org/u/emmanuel_madarassou1)
#### Post date: [June 19, 2020, 2:20pm UTC](https://discourse.paraview.org/t/lightviz-launching-not-working/4624/1 "2020-06-19T14:20:39Z")

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Hi everyone I’m having trouble making the PVW LightViz application working. Can someone help me with this error please ?

 ![Capture_LI](https://discourse.paraview.org/uploads/default/original/2X/2/2dc290f482da98326579e150e6fcea589f1ead37.jpeg)

Do I need to copy some vtk files ? I tried to npm install but it didn’t fix it.

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### Author: ![jourdain](https://discourse.paraview.org/user_avatar/discourse.paraview.org/jourdain/32/11_2.png) [@jourdain](https://discourse.paraview.org/u/jourdain)
#### Post date: [June 19, 2020, 7:33pm UTC](https://discourse.paraview.org/t/lightviz-launching-not-working/4624/2 "2020-06-19T19:33:19Z")

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> <https://github.com/Kitware/light-viz/issues/76>
>
> Under paraview-5.8.0， LightViz 1.0， I got this error
> xu@debian:~/app/para-view$ LightViz --paraview ROOT --data ./ParaView-v5.8.0/Remoting/Application/Testing/Data/
> ls: no such file or directory: /Applications
> ls: no such...