( ! ) Fatal error: Uncaught PDOException: SQLSTATE[08004] [1040] Too many connections in /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70 Stack trace: #0 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(70): PDO->__construct() #1 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(46): Illuminate\Database\Connectors\Connector->createPdoConnection() #2 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(24): Illuminate\Database\Connectors\Connector->createConnection() #3 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConnector->connect() #4 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}() #5 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(1181): call_user_func() #6 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(539): Illuminate\Database\Connection->getPdo() #7 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(753): Illuminate\Database\Connection->Illuminate\Database\{closure}() #8 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(720): Illuminate\Database\Connection->runQueryCallback() #9 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(546): Illuminate\Database\Connection->run() #10 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/DatabaseManager.php(469): Illuminate\Database\Connection->statement() #11 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php(338): Illuminate\Database\DatabaseManager->__call() #12 /var/www/ojsPolbeng/lib/pkp/classes/core/PKPApplication.php(268): Illuminate\Support\Facades\Facade::__callStatic() #13 /var/www/ojsPolbeng/lib/pkp/classes/core/PKPApplication.php(230): PKP\core\PKPApplication->initializeTimeZone() #14 /var/www/ojsPolbeng/lib/pkp/classes/core/PKPApplication.php(200): PKP\core\PKPApplication->initializeLaravelContainer() #15 /var/www/ojsPolbeng/classes/core/Application.php(50): PKP\core\PKPApplication->__construct() #16 /var/www/ojsPolbeng/lib/pkp/includes/bootstrap.php(37): APP\core\Application->__construct() #17 /var/www/ojsPolbeng/index.php(18): require_once('...') #18 {main} Next Illuminate\Database\QueryException: SQLSTATE[08004] [1040] Too many connections (SQL: SET time_zone = '+07:00') in /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 760
( ! ) Illuminate\Database\QueryException: SQLSTATE[08004] [1040] Too many connections (SQL: SET time_zone = '+07:00') in /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 760
Call Stack
#TimeMemoryFunctionLocation
10.0001427112{main}().../index.php:0
30.0187626592APP\core\Application->__construct().../bootstrap.php:37
40.0187626592APP\core\Application->__construct().../Application.php:50
50.0414646120APP\core\Application->initializeLaravelContainer().../PKPApplication.php:200
60.47071478016APP\core\Application->initializeTimeZone().../PKPApplication.php:230
70.47161597464Illuminate\Support\Facades\Facade::statement().../PKPApplication.php:268
80.47161597840Illuminate\Support\Facades\Facade::__callStatic().../PKPApplication.php:268
90.47161597840Illuminate\Database\DatabaseManager->statement().../Facade.php:338
100.47161598216Illuminate\Database\DatabaseManager->__call().../Facade.php:338
110.47161598216Illuminate\Database\MySqlConnection->statement().../DatabaseManager.php:469
120.47161598664Illuminate\Database\MySqlConnection->run().../Connection.php:546
130.47161598664Illuminate\Database\MySqlConnection->runQueryCallback().../Connection.php:720
( ! ) Fatal error: Uncaught PDOException: SQLSTATE[08004] [1040] Too many connections in /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70 Stack trace: #0 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(70): PDO->__construct() #1 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(46): Illuminate\Database\Connectors\Connector->createPdoConnection() #2 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(24): Illuminate\Database\Connectors\Connector->createConnection() #3 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConnector->connect() #4 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}() #5 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(1181): call_user_func() #6 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(1217): Illuminate\Database\Connection->getPdo() #7 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(486): Illuminate\Database\Connection->getReadPdo() #8 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(414): Illuminate\Database\Connection->getPdoForSelect() #9 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(753): Illuminate\Database\Connection->Illuminate\Database\{closure}() #10 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(720): Illuminate\Database\Connection->runQueryCallback() #11 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(422): Illuminate\Database\Connection->run() #12 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2706): Illuminate\Database\Connection->select() #13 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2694): Illuminate\Database\Query\Builder->runSelect() #14 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(3230): Illuminate\Database\Query\Builder->Illuminate\Database\Query\{closure}() #15 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2695): Illuminate\Database\Query\Builder->onceWithColumns() #16 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(3157): Illuminate\Database\Query\Builder->get() #17 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(3085): Illuminate\Database\Query\Builder->aggregate() #18 /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Builder.php(1869): Illuminate\Database\Query\Builder->count() #19 /var/www/ojsPolbeng/lib/pkp/classes/queue/JobRunner.php(203): Illuminate\Database\Eloquent\Builder->__call() #20 /var/www/ojsPolbeng/lib/pkp/classes/core/PKPQueueProvider.php(135): PKP\queue\JobRunner->processJobs() #21 [internal function]: PKP\core\PKPQueueProvider->PKP\core\{closure}() #22 {main} Next Illuminate\Database\QueryException: SQLSTATE[08004] [1040] Too many connections (SQL: select count(*) as aggregate from `jobs` where `reserved_at` is null and `available_at` <= 1765696543 and `queue` is not null and `queue` != queuedTestJob and `attempts` < 3) in /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 760
( ! ) Illuminate\Database\QueryException: SQLSTATE[08004] [1040] Too many connections (SQL: select count(*) as aggregate from `jobs` where `reserved_at` is null and `available_at` <= 1765696543 and `queue` is not null and `queue` != queuedTestJob and `attempts` < 3) in /var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 760
Call Stack
#TimeMemoryFunctionLocation
10.70281771456PKP\core\PKPQueueProvider->PKP\core\{closure:/var/www/ojsPolbeng/lib/pkp/classes/core/PKPQueueProvider.php:117-136}().../PKPQueueProvider.php:0
20.70291773632PKP\queue\JobRunner->processJobs().../PKPQueueProvider.php:135
31.20862487656Illuminate\Database\Eloquent\Builder->count().../JobRunner.php:203
41.20862487656Illuminate\Database\Eloquent\Builder->__call().../JobRunner.php:203
51.20862487656Illuminate\Database\Query\Builder->count().../Builder.php:1869
61.20862582240Illuminate\Database\Query\Builder->aggregate().../Builder.php:3085
71.20862583760Illuminate\Database\Query\Builder->get().../Builder.php:3157
81.20872584144Illuminate\Database\Query\Builder->onceWithColumns().../Builder.php:2695
91.20872584144Illuminate\Database\Query\Builder->Illuminate\Database\Query\{closure:/var/www/ojsPolbeng/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php:2693-2695}().../Builder.php:3230
101.20872584400Illuminate\Database\Query\Builder->runSelect().../Builder.php:2694
111.20902584968Illuminate\Database\MySqlConnection->select().../Builder.php:2706
121.20902585824Illuminate\Database\MySqlConnection->run().../Connection.php:422
131.20902585824Illuminate\Database\MySqlConnection->runQueryCallback().../Connection.php:720