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Try running apt-get install libqt5gui5

If that doesn't work, open a terminal and type export QT_DEBUG_PLUGINS=1 and then run the program from the terminal. His won't fix the problem but it will print debug output, please paste it here.

I ran export QT_DEBUG_PLUGINS=1 but there was no output printed on the terminal.

You should run the command and then the JM GUI in the same terminal, did you do that?

I did. Still nothing.

https://i.imgur.com/FLFYJxD.png

Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() looking at "/home/inso/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so.debug"
"The shared library was not found."
         not a plugin
QFactoryLoader::QFactoryLoader() checking directory path "/home/inso/build-untitled-Desktop_Qt_5_15_0_GCC_64bit-Debug/platforms" ...
Cannot load library /home/inso/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-icccm.so.4: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden)
QLibraryPrivate::loadPlugin failed on "/home/inso/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /home/inso/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-icccm.so.4: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden)"
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.

You forgot to type export before the command. It should be: export QT_DEBUG_PLUGINS=1

By exporting a variable, you are making it visible to child processes.

What this is supposed to do is print debugging information about the shared library that has failed to load and thus causing the plugin error. It should print output similar to this:


The bold parts are the key information we need to find. If we know the library we can install it with apt.

In your case, the problem may or may not be libxcb-icccm, that's why I'm asking for debug output first.

Here is the output:

https://pastebin.com/raw/PN4NM4Aj

Try running "apt-get install libxcb-util1" on your terminal.

Try running "apt-get install libxcb-util1" on your terminal.

It did it with libxcb-util0 as libxcb-util1 was not found. The same error persists.

Alright I found the ticket for this bug report: https://bugreports.qt.io/plugins/servlet/mobile#issue/QTBUG-84749

The bug report says you need to apt-get install libxcb-xinerama0 to fix the problem.

Hope this helps.

LMAO. Mate, I tried that 2 days ago. At this point I have tried that like 30 times or so. I have tried every single thing you find on google. Nothing works.

I think the reason why nothing's working is because JoinMarket is using the Qt provided by PySide2, which doesn't have any of these libxcb things we keep trying to install. They are all hitting the system Qt installation.

/home/user/joinmarket-clientserver/jmvenv/lib/python3.7/site-packages/PySide2/Qt/
^--- this is where libxcb and co. are supposed to be installed in but I'm not sure how to do that.

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.