Could not load the Qt platform plugin "xcb" in "" even though it was found

[gabriel-vanzandycke]

Hi, I tried to launch the application, but get stuck with Qt not being able to load the plugin "xcb". I'm not sure what packages is missing. Could you help me please? Thanks

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.

[1]    482 abort (core dumped)  python -m ultimatelabeling.main

Additional details

$ which python
/home/user/UltimateLabeling/venv/bin/python
$ python --version
Python 3.6.8

Running on Ubuntu 18.04.3 LTS

[VaticanCameos99]

Hi, were you able to solve this? I am facing the same issue.

[silasalves]

As suggested here, I ran export QT_DEBUG_PLUGINS=1 then saw on the error message that libxcb-xinerama.so.0 didn't exist, so just installed it with:

$ sudo apt install libxcb-xinerama0