mx@ubuntu:~/Downloads$ flatpak install flathub org.js.nuclear.Nuclear
Looking for matches…

org.js.nuclear.Nuclear permissions:
    ipc                     network       fallback-x11      pulseaudio      wayland      x11      dri      file access [1]
    bus ownership [2]

    [1] xdg-download, xdg-music
    [2] org.mpris.MediaPlayer2.nuclear


        ID                              Branch          Op          Remote          Download
 1. [✓] org.js.nuclear.Nuclear          stable          i           flathub         194.2 MB / 198.3 MB

Installation complete.
mx@ubuntu:~/Downloads$ flatpak run org.js.nuclear.Nuclear
[3:0716/161356.932350:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
      main ›  (node:3) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `nuclear --trace-deprecation ...` to show where the warning was created) 
[3:0716/161357.811950:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[3:0716/161357.812000:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
      main › production Env variables loaded
      main › Initialized settings store at /home/mx/.var/app/org.js.nuclear.Nuclear/config/nuclear/config.json
FATAL ERROR: Error::ThrowAsJavaScriptException napi_throw
----- Native stack trace -----

/app/bin/run.sh: line 8:     3 Aborted                 (core dumped) zypak-wrapper /app/main/nuclear --enable-features=UseOzonePlatform --ozone-platform=wayland --enable-features=WaylandWindowDecorations "$@"