MySQL connection error: (# 1045) 'Access denied for user 'XXXXXXX'@'localhost' (using password: YES)'

Stack trace:
[ 0] __construct({Array( [dbHost] => localhost [dbPass] => XXXXXX...})  @  /base/zfx/data-model/Model.php[102]
[ 1] __construct(confimenusenlaces, )  @  /models/my/ModeloBase.php[27]
[ 2] __construct(confimenusenlaces, )  @  /modules/menus/models/MMenusenlaces.php[39]
[ 3] __construct(, )  @  /base/zfx/activex-tools/ModelHandler.php[110]
[ 4] inst(menus, menusenlaces)  @  /modules/menus/models/MMenusenlaces.php[467]
[ 5] comprobarTipoPermiso(citaprevia/citaprevia/VSVIAJESDEMOPUBLICOEMPRESARIAL/fecha/res/klorofil/nestable/res/klorofil/fullcalendar/css/res/app/js/datatable.js)  @  /controllers/abstract/PermissionBase.php[66]
[ 6] checkRestrictions()  @  /controllers/abstract/PermissionBase.php[36]
[ 7] __construct(, )  @  /controllers/abstract/ScopeBase.php[35]
[ 8] __construct(, )  @  /controllers/abstract/PublicBase.php[45]
[ 9] __construct(citaprevia)  @  /modules/citaprevia/controllers/Citaprevia.php[31]
[10] __construct()  @  /index.php[190]