I am trying to run the EdexUI app image https://github.com/GitSquared/edex-ui/releases After making it into an executable I try to run it but it gives me the following error:

zenity, kdialog, Xdialog missing. Skipping /tmp/.mount_eDEX-UzH142J/AppRun.
/tmp/.mount_eDEX-UzH142J/edex-ui: error while loading shared libraries: libnss3.so: cannot open shared object file: No such file or directory

I can't figure out what exactly that error means or how to fix it.

Could you help me fix it? Thanks in advance!

1 Answer 1


There is another error message in the topic of your question and another one in the text.

Regarding the message from topic, looks like application displays dialog boxes using one of the default system tools that provide this feature. These tools are usually pre-installed in various desktop environments: zenity in GNOME or MATE, kdialog in KDE and Xdialog should be probably available in other DEs (I'm not sure about this one). For some reason, none of these utilities is present on your system, so the solution is to install one of them.

Regarding the message from text, libnss3 package seems to be missing, so you have to install it.

  • My bad, it seems I didn't paste the whole error. Fixed it. Nov 9, 2020 at 15:50
  • Thanks for the advice! Nov 9, 2020 at 15:51
  • So you probably need to install both zenity/kdialog/Xdialog (according to your DE) and libnss3.
    – raj
    Nov 9, 2020 at 15:51
  • Installing the packages fixed the errors. Thanks! Nov 9, 2020 at 15:59

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