Issue with the Qt platform plugin "xcb"

[Charlsv316]

Thank you @grahamrow for your work!
Well, I downloaded Muview (2.1.3.3) and I am facing the following error:
This application failed to start because it could not find or load the Qt platform plugin "xcb"
in "".
Available platform plugins are: xcb
I am using Fedora and I am not good in Linux.
I worked with chatgpt and I reinstalled the following libraries:
libxcb, libxcb-devel, libX11, libX11-devel, libXcursor, libXcursor-devel, libXrandr, libXrandr-devel, libXi, libXi-devel, fontconfig and freetype
and it doesn't help. The problem is with the library: "libfontconfig.so.1" and I can open Muview2-x86_64.AppImage with the following command:
LD_PRELOAD=/ruta/a/libfontconfig.so.1 ./Muview2-x86_64.AppImage
This was my experienced. Thanks again for your work!

[probonopd]

libfontconfig should not be bundled inside the AppImage.
If it is, then it should be removed.

Reference:
https://github.com/AppImageCommunity/pkg2appimage/blob/3076946d2cc4f4909d7927f9477e3178d5c04d02/excludelist#L119

[probonopd]

Unrelated side note: I was successfully able to run the provided Intel/AMD Muview2-x86_64.AppImage on the ARM 64-bit Raspberry Pi 5 just fine (details).

[subham-221-PhD]

I have tried the above in ubuntu 24.04.1 LTS. It is giving the following error:-

"
LD_PRELOAD=/ruta/a/libfontconfig.so.1 ./Muview2-x86_64.AppImage
ERROR: ld.so: object '/ruta/a/libfontconfig.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/ruta/a/libfontconfig.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
This application failed to start because it could not find or load the Qt platform plugin "xcb"
in "".

Available platform plugins are: xcb.

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

The muview version 2.1.2 ubuntu one works fine. Can you give me solution as soon as possible. My research depends on it.

[probonopd]

Please use strace to see what is missing. Do you know how to use that tool?

[subham-221-PhD]

I am sorry. But, I don't know how to use strace.
Also, I recently upgraded from 22.04 LTS to 24.04.1 LTS. Is the issue happening because of this?

[goodxdie]

I encountered this issue and resolved it, this could be an issue with dynamic linking libraries. I sharing the solution for reference.

First, I executed export QT_DEBUG_PLUGINS=1, which caused muview to output specific error messages when run again. The error indicated that the problem was with .plugins/platforms/libqxcb.so.

Then, I navigated to this path and used the command ldd libqxcb.so to check the links. I found that some libraries, such as libSM.so.6, were missing, so I reinstalled the missing libraries.

After that, the problem was resolved, and when I ran ldd again, the links were all normal.

[yeungyu123]

I encountered this issue and resolved it, this could be an issue with dynamic linking libraries. I sharing the solution for reference.

First, I executed export QT_DEBUG_PLUGINS=1, which caused muview to output specific error messages when run again. The error indicated that the problem was with .plugins/platforms/libqxcb.so.

Then, I navigated to this path and used the command ldd libqxcb.so to check the links. I found that some libraries, such as libSM.so.6, were missing, so I reinstalled the missing libraries.

After that, the problem was resolved, and when I ran ldd again, the links were all normal.

I used export QT_DEBUG_PLUGINS=1, and then ran the program to get the detailed error message, GPT4.1 analyzed the error message and told me to try to delete the Muview/lib/libfreetype.so file, I tried it and ran the program successfully