I'm using a tiling window manager like i3. What specific steps should I take to resolve this error?

For tiling window managers like i3, ensure no other instance of i3 is running in the background. Check for leftover i3 lock files in `/tmp`. If you're using a display manager, try restarting it. If you start i3 manually with `starti3`, ensure you've properly terminated any previous instances before launching a new one. Also, check your `.xinitrc` or `.xprofile` for any conflicting window manager startup commands.