[SteamOS 3.9] Wayland autostart script shows Unable to open a connection to X upon startup

[alexsch01]

nano /home/deck/.config/autostart/wayland_by_default.sh

#!/bin/sh

if [ "$XDG_SESSION_TYPE" = "x11" ]; then
  sleep 1
  steamosctl set-default-desktop-session plasma.desktop
  steamosctl switch-to-desktop-mode
fi

chmod +x /home/deck/.config/autostart/wayland_by_default.sh

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nano /home/deck/.config/autostart/wayland_by_default.desktop

[Desktop Entry]
Exec=/home/deck/.config/autostart/wayland_by_default.sh
Type=Application
X-KDE-AutostartScript=true

---