Aha!
I put this:
<Directory /var/www/openemr>
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Require all granted
in /etc/apache2/sites-available/000-default.conf
And it allowed me to save the credentials. And the errors didn’t show up in the browser console.
No idea what I’m doing. Does that seems like a valid solution? Is there any problem with do that?
Thanks!