I'm trying to open chromium when the Raspberry Pi 3B+ boots. I've found this post, but my raspberry doesn't seem to have the /home/pi/.config/lxsession folder.

I tried creating the autostart file but It it won't work:
sudo nano /home/pi/.config/lxsession/LXDE-pi/autostart
Any clues?
Unsupported command-line flag: –no-sandbox. If I follow your tutorial but I remove the no-sandbox flag it won't open. – Mikel Granero Jun 23 '19 at 13:20runuser -l pi -c chromium-browser? – Ephemeral Jun 23 '19 at 14:32ExecStart=line? – Mikel Granero Jun 23 '19 at 15:46