Fatal error: Uncaught PDOException: SQLSTATE[08004] [1040] Too many connections in /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:27
Stack trace:
#0 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(27): PDO->__construct('mysql:host=os24...', 'root', '11111', Array)
#1 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php(22): Doctrine\DBAL\Driver\PDOConnection->__construct('mysql:host=os24...', 'root', 11111, Array)
#2 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(356): Doctrine\DBAL\Driver\PDOMySql\Driver->connect(Array, 'root', 11111, Array)
#3 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(889): Doctrine\DBAL\Connection->connect()
#4 /var/www/html/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(733): Doctrine\DBAL\Connection->executeQuery('SELECT t0.id AS...', Array, Array)
#5 /var/www/html/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersi in /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php on line 106