I am running crostini on an asus chromebook. Qcad version is qcad-3.31.1-trial-linux-qt5.14-x86_64.
I have already followed the procedure shown here: https://qcad.org/rsforum/viewtopic.php?t=7866
thanks in advance

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Warning: Failed to load client buffer integration: "wayland-egl"
Warning: Available client buffer integrations: ()
Warning: No shell integration named "xdg-shell" found
Warning: No shell integration named "xdg-shell-v6" found
Warning: No shell integration named "wl-shell" found
Warning: No shell integration named "ivi-shell" found
Warning: Loading shell integration failed.
Warning: Attempted to load the following shells ("xdg-shell", "xdg-shell-v6", "wl-shell", "ivi-shell")
21:53:20: Debug: LayerListPro.init
21:53:20: Debug: loading plugins...
21:53:20: Debug: loading static plugins...
21:53:20: Debug: loading plugins...
21:53:20: Debug: loading static plugins...
21:53:22: Debug: loading plugins...
21:53:22: Debug: loading static plugins...
Warning: Failed to load client buffer integration: "wayland-egl"
Warning: Available client buffer integrations: ()
Warning: No shell integration named "xdg-shell" found
Warning: No shell integration named "xdg-shell-v6" found
Warning: No shell integration named "wl-shell" found
Warning: No shell integration named "ivi-shell" found
Warning: Loading shell integration failed.
Warning: Attempted to load the following shells ("xdg-shell", "xdg-shell-v6", "wl-shell", "ivi-shell")
