It comes with me when I am setting database configuration in installation of OpenScholar.
Warning: in DatabaseConnection->__construct() (line 304 of C:\BitNami\wampstack-5.3.23-0\apps\drupal\htdocs\includes\database\database.inc). Warning: htmlspecialchars(): Invalid multibyte sequence in argument in check_plain() (line 1572 of C:\BitNami\wampstack-5.3.23-0\apps\drupal\htdocs\includes\bootstrap.inc).
And, I cannot log in the server by using "root" and the password I set previously.
How can I solve it?