How to fix qt.qpa.plugin: Could not find the Qt platform plugin "windows" in "" error

[SGaist]

Hi and welcome to devnet,

You should try starting your script with the QT_DEBUG_PLUGINS environment variable set to 1 to get more information about what happens with the plugins.

[Gokalp]

@SGaist I have never used virtual environments so i didn't really get what you meant, could you explain it a little bit more?

[SGaist]

I did not write about "virtual environments" but about "environment variable".

[Gokalp]

@SGaist I did what you said and got this message
QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/GOKTUº ALKAN/AppData/Local/Programs/Python/Python310/platforms" ...
qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

[SGaist]

Hi,

You should have had way more messages than that. There should be a full plugin dump.

[Gokalp]

@SGaist Thats all i got. Maybe i'm doing something wrong? i used this: os.environ["QT_DEBUG_PLUGINS"] = "1"

[jsulm]

@Gokalp said in How to fix qt.qpa.plugin: Could not find the Qt platform plugin "windows" in "" error:

i used this: os.environ["QT_DEBUG_PLUGINS"] = "1"

This is not going to work this way.
Set it in a terminal and then start your app in this terminal.

[Gokalp]

@jsulm said in How to fix qt.qpa.plugin: Could not find the Qt platform plugin "windows" in "" error:

os.environ["QT_DEBUG_PLUGINS"] = "1"

How can i set it in the terminal?

[jsulm]

@Gokalp On Windows:

set QT_DEBUG_PLUGINS=1

[Gokalp]

@jsulm still the same

[SGaist]

Can you retry with an environment stored in a path without space or accented character ?

[Gokalp]

@SGaist How can i do that? My brother happened to be at home when this pc arrived so he made the username his name which contains Ö and Ğ characters... I tried to change the username several times but it never changed on the terminal so i really don't know what to do. Maybe there is another way that i can do what you're saying?

[SGaist]

Install your python environment in a folder starting from the root of your disk. For example "C:/Code/name_of_your_environment".

[Gokalp]

@SGaist Could you tell me how to do that? I have never used python that way since i didn't face any problems before

[SGaist]

How did you install Python ?
How are you managing your virtual environments ?

[Gokalp]

@SGaist I have never messed with environments, i installed python from its site and used it globally. All of my modues are also installed globally.

[SGaist]

Then I would recommend reconsidering that modus operandi.

[jsulm]

@Gokalp said in How to fix qt.qpa.plugin: Could not find the Qt platform plugin "windows" in "" error:

i installed python from its site

Which site?
Using Python installer from official Python website allows you to select the installation folder.

[Gokalp]

@jsulm i installed it directly into the c folder

[SGaist]

So what happens now ?