This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

[Jing-W98]

This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

[xvjiarui]

Hi @Jing-W98
What command did you run?

[Jing-W98]

I run the demo.py by"
python demo/image_demo.py demo/demo.png configs/pspnet/pspnet_r50-d8_512x1024_40k_cityscapes.py
checkpoints/pspnet_r50-d8_512x1024_40k_cityscapes_20200605_003338-2966598c.pth --device cuda:0 --palette cityscapes "

[xvjiarui]

Are you running from a computer with GUI or not?

[Jing-W98]

No, I run it with Mobaxterm on Linux.

[xvjiarui]

Hi @Jing-W98
You should check if your xserver is correctly installed. You may try some simple plt.plot. If it fails, you may try to re-install xserver.

[lllz815]

HI,do you solve this problem,i have the same problem as you now,Can you give me some suggestion

[kyre-99]

I got same problem, it was from opencv-python version problem for me.
My Linux machine's environment is as following:
pip uninstall opencv-python
pip install opencv-python==4.3.0.36
pip list|grep opencv-python