Warning: session_start(): Failed to read session data: user (path: /var/lib/php/session) in /var/www/html/vitruvian/lib/pkp/classes/session/SessionManager.inc.php on line 58

Fatal error: Uncaught PDOException: SQLSTATE[HY000] [1040] Too many connections in /var/www/html/vitruvian/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:38 Stack trace: #0 /var/www/html/vitruvian/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(38): PDO->__construct('mysql:host=loca...', 'vitruvian', 'UserMysql', Array) #1 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(67): Doctrine\DBAL\Driver\PDOConnection->__construct('mysql:host=loca...', 'vitruvian', 'UserMysql', Array) #2 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(46): Illuminate\Database\Connectors\Connector->createPdoConnection('mysql:host=loca...', 'vitruvian', 'UserMysql', Array) #3 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(24): Illuminate\Database\Connectors\Connector->createConnection('mysql:host=loca...', Array, Array) #4 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConnector->connect(Array) #5 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}() #6 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(926): call_user_func(Object(Closure)) #7 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(961): Illuminate\Database\Connection->getPdo() #8 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(405): Illuminate\Database\Connection->getReadPdo() #9 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(360): Illuminate\Database\Connection->getPdoForSelect(true) #10 /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Conne in /var/www/html/vitruvian/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671