OK, that shouldn't be an issue.  I'm just guessing at this point since nothing has changed in the profile updater script in a long time over many releases.  I'm assuming you are running the installer under the same user name (Elias) and that Elias is an admin user.  Fortunately, you can run the script manually  since a copy is installed in /Applications/Python 3.6.  Try double-clicking on the "Update Shell Profile.command" file there and see what shows up in the ensuing terminal window.  If it now works, try restoring the original file:

mv ~/.bash_profile.pysave ~/.bash_profile

and rerun the installer and, and before quitting the installer, checking the installer log output (CMD-L and then selecting the all messages option) for clues.