Fatal error: Uncaught PDOException: SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES) in /opt/lampp/htdocs/dhtmlxSuite_v5.1/samples/dhtmlxTreeView/common/treeview_dyn.php:17 Stack trace: #0 /opt/lampp/htdocs/dhtmlxSuite_v5.1/samples/dhtmlxTreeView/common/treeview_dyn.php(17): PDO->__construct('mysql:host=loca...', 'root', '1') #1 {main} thrown in /opt/lampp/htdocs/dhtmlxSuite_v5.1/samples/dhtmlxTreeView/common/treeview_dyn.php on line 17