According to the output of the command
ls -la /opt/bitnami/apps/wordpress/htdocs/, I can see some files (
wordfence-waf.php) with different permissions (different user in this case).
Can you run the following commands to unify permissions between these files and the others?
sudo chown bitnami:daemon .htaccess .user.ini wordfence-waf.php
After that, if you run again
ls -la /opt/bitnami/apps/wordpress/htdocs/
you should see all files with user
Carlos R. Hernández