ERROR: SQLSTATE[08004] [1040] Too many connections已解决 悬赏5积分

08:32:28 ERROR: SQLSTATE[08004] [1040] Too many connections in C:\xampp\zentao\framework\router.class.php on line 1533, last called by C:\xampp\zentao\framework\router.class.php on line 1495 through function connectByPDO.
in C:\xampp\zentao\framework\router.class.php on line 1576 when visiting