I had this similar issue, it’s possible the problem lies in this file:
wp-content/themes/enigma/core/scripts/css_js.php
It appears there’s a ” ” (space character) at the end of the file right after the ?> marker.
This means that there’s output being sent and the redirect header can’t be sent afterwards (to redirect to wp-login from wp-admin).
You can find the warning for this by setting DEBUG to true in wp-config.php.
Hope this helps, it fixed it for me!
