Labelimg: This application failed to start because it could not find or load the Qt platform plugin "xcb"

[edisonchensy]

edison@amax-server:~/labelImg-master$ make qt5py3
pyrcc5 -o resources.py resources.qrc
edison@amax-server:~/labelImg-master$ python3 labelImg.py
This application failed to start because it could not find or load the Qt platform plugin "xcb"
in "".

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.

Reinstalling the application may fix this problem.
Aborted (core dumped)

• **OS: Ubuntu 16.04
• *PyQt 5

please give me a help, thank you

[vdalv]

There are a number of threads on stackoverflow regarding this issue (an example), have you been able to try any of the solutions?

[vdalv]

Closing due to inactivity.

[mxmlnkn]

Had the same problem even though I followed the install instructions. In my case it was because I had a custom installation in /opt/Qt/. After deleting paths to that folder from LD_LIBRARY_PATH and PATH, it works. For some reason, exporting the missing plugin path does not work export QT_QPA_PLATFORM_PLUGIN_PATH=/opt/Qt/5.12.3/gcc_64/plugins/platform. Not sure what I'm doing wrong here.

[krishnaupadhyay3]

sudo apt-get install pyqt5-dev-tools install dev tools

[epicure24]

@krishnaupadhyay3 I used only sudo apt-get install pyqt5-dev tools and it worked :) Thank you

[Linranran]

OS:windows
set QT_QPA_PLATFORM_PLUGIN_PATH=C:\Python36\Lib\site-packages\PyQt5\plugins