Login error message scan
The scan
This scan checks the login page doesn't reveal too sensitive information in case there's an error.
The fix
SecuPress will display a less specific message to the user when there's an error.
What if the fix doesn't work ?
Try to find the plugin preventing SecuPress from modifying the error messages and deactivate it. The problem may also come from a code snippet added to your theme's functions.php
file.