PDO error: could not connect to DB, error: PDOException: SQLSTATE[HY000] [1045] Access denied for user 'test'@'localhost' (using password: YES) in /var/www/html/example/recap-ajax/database.php:10
Stack trace:
#0 /var/www/html/example/recap-ajax/database.php(10): PDO->__construct()
#1 /var/www/html/example/recap-ajax/functions.php(2): include('...')
#2 /var/www/html/example/recap-ajax/index.php(2): include('...')
#3 {main}<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in /var/www/html/example/recap-ajax/functions.php:23
Stack trace:
#0 /var/www/html/example/recap-ajax/index.php(3): getAllStudents()
#1 {main}
  thrown in <b>/var/www/html/example/recap-ajax/functions.php</b> on line <b>23</b><br />