Missing if condition in 'mountpoint' logic

[rzkw]

Your readme says:

If mounted:
Proceed with the backup process.
If not mounted:
Display an error message:
"$mountpoint is not mounted", styled in bold, and exit with code 6.

but this isn't in your script, where it only says:

  # Check if back up disk is mounted
  if mountpoint -q $mountpoint
  then
  
  
  # Clean up previous log(s)...

Should there be an error handling loop that's missing? e.g. rsync elif echo "$mountpoint is not mounted"...