Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [1040] Too many connections' in D:\wwwroot\xueliks\vendor2\doctrine\dbal\lib\Doctrine\DBAL\Driver\PDOConnection.php:43 Stack trace: #0 D:\wwwroot\xueliks\vendor2\doctrine\dbal\lib\Doctrine\DBAL\Driver\PDOConnection.php(43): PDO->__construct('mysql:host=loca...', 'xueliks', 'k7u7h3U7', Array) #1 D:\wwwroot\xueliks\vendor2\doctrine\dbal\lib\Doctrine\DBAL\Driver\PDOMySql\Driver.php(45): Doctrine\DBAL\Driver\PDOConnection->__construct('mysql:host=loca...', 'xueliks', 'k7u7h3U7', Array) #2 D:\wwwroot\xueliks\vendor2\doctrine\dbal\lib\Doctrine\DBAL\Connection.php(360): Doctrine\DBAL\Driver\PDOMySql\Driver->connect(Array, 'xueliks', 'k7u7h3U7', Array) #3 D:\wwwroot\xueliks\vendor2\doctrine\dbal\lib\Doctrine\DBAL\Connection.php(429): Doctrine\DBAL\Connection->connect() #4 D:\wwwroot\xueliks\vendor2\doctrine\dbal\lib\Doctrine\DBAL\Connection.php(389): Doctrine\DBAL\Connection->getDatabasePlatformVersion() #5 D:\wwwroot\xueliks\vendor2\doctrine\dbal\lib\Do in D:\wwwroot\xueliks\vendor2\doctrine\dbal\lib\Doctrine\DBAL\Driver\AbstractMySQLDriver.php on line 115