# Qt5 error (Ubuntu 20.04)

**URL:** https://discourse.paraview.org/t/qt5-error-ubuntu-20-04/5562
**Category:** ParaView Support
**Created:** [October 14, 2020, 10:43am UTC](https://discourse.paraview.org/t/qt5-error-ubuntu-20-04/5562 "2020-10-14T10:43:21Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Jamargi](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/j/d78d45/32.png) [@Jamargi](https://discourse.paraview.org/u/Jamargi)
#### Post date: [October 14, 2020, 10:43am UTC](https://discourse.paraview.org/t/qt5-error-ubuntu-20-04/5562/1 "2020-10-14T10:43:21Z")

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Good morning,

I am having problems installing Paraview 5.8 on my Linux machine, through the MPI package included in the webpage. When launching it, it says:  
“…/ParaView-5.8.1-MPI-Linux-Python2.7-64bit/bin/…/lib/libQt5Core.so.5: version `Qt\_5.12’ not found (required by /usr/lib/x86\_64-linux-gnu/libQt5Network.so.5)”

If I “ll” the lib folder, it seems it is properly pointed: “libQt5Core.so.5 -\> libQt5Core.so.5.12.8”

What is the problem here?  
Kind regards.

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### Author: ![utkarsh.ayachit](https://discourse.paraview.org/user_avatar/discourse.paraview.org/utkarsh.ayachit/32/39_2.png) [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)
#### Post date: [October 14, 2020, 11:41am UTC](https://discourse.paraview.org/t/qt5-error-ubuntu-20-04/5562/2 "2020-10-14T11:41:43Z")

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I suspect you have a modified `LD_LIBRARY_PATH` or some such. Try running with `LD_DEBUG=libs` environment variable set and then pipe the output to a file. Inspecting the file will tell you which Qt5Core library it is trying to load and why.