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Additional information:

Szene1_Db_MySQLiConnectionException

File:
/var/app/current/htdocs/lib/Szene1/Db/MySQLiConn.php:75
Message:
Can't connect to Database szene1_v3 on 172.31.52.39
2002 - Connection timed out
Stack trace:
#0 /var/app/current/htdocs/lib/Szene1/Db/MySQLiConn.php(127): Szene1_Db_MySQLiConn->_openNewDBConn()
#1 /var/app/current/htdocs/lib/Szene1/Db/MySQLiConn.php(148): Szene1_Db_MySQLiConn->__construct(false, false)
#2 /var/app/current/htdocs/lib/Szene1/Db/MySQLiMasterSlaveManager.php(259): Szene1_Db_MySQLiConn::instance()
#3 /var/app/current/htdocs/lib/Szene1/Db/MySQLiMasterSlaveManager.php(230): Szene1_Db_MySQLiMasterSlaveManager->getSlaveConnection()
#4 /var/app/current/htdocs/lib/Szene1/Db/MySQLiMasterSlaveManager.php(88): Szene1_Db_MySQLiMasterSlaveManager->getQueryConnection('SELECT * FROM e...')
#5 /var/app/current/htdocs/lib/Szene1/Mapper/Event.php(83): Szene1_Db_MySQLiMasterSlaveManager->query('SELECT * FROM e...')
#6 /var/app/current/htdocs/src/modules/Szene1/src/Szene1/Controller/PhotosController.php(152): Szene1_Mapper_Event->getPublicEvent('385454')
#7 /var/app/current/htdocs/src/vendor/zendframework/zendframework/library/Zend/Mvc/Controller/AbstractActionController.php(83): Szene1\Controller\PhotosController->photoAction()
#8 [internal function]: Zend\Mvc\Controller\AbstractActionController->onDispatch(Object(Zend\Mvc\MvcEvent))
#9 /var/app/current/htdocs/src/vendor/zendframework/zendframework/library/Zend/EventManager/EventManager.php(468): call_user_func(Array, Object(Zend\Mvc\MvcEvent))
#10 /var/app/current/htdocs/src/vendor/zendframework/zendframework/library/Zend/EventManager/EventManager.php(207): Zend\EventManager\EventManager->triggerListeners('dispatch', Object(Zend\Mvc\MvcEvent), Object(Closure))
#11 /var/app/current/htdocs/src/vendor/zendframework/zendframework/library/Zend/Mvc/Controller/AbstractController.php(117): Zend\EventManager\EventManager->trigger('dispatch', Object(Zend\Mvc\MvcEvent), Object(Closure))
#12 /var/app/current/htdocs/src/vendor/zendframework/zendframework/library/Zend/Mvc/DispatchListener.php(114): Zend\Mvc\Controller\AbstractController->dispatch(Object(Zend\Http\PhpEnvironment\Request), Object(Zend\Http\PhpEnvironment\Response))
#13 [internal function]: Zend\Mvc\DispatchListener->onDispatch(Object(Zend\Mvc\MvcEvent))
#14 /var/app/current/htdocs/src/vendor/zendframework/zendframework/library/Zend/EventManager/EventManager.php(468): call_user_func(Array, Object(Zend\Mvc\MvcEvent))
#15 /var/app/current/htdocs/src/vendor/zendframework/zendframework/library/Zend/EventManager/EventManager.php(207): Zend\EventManager\EventManager->triggerListeners('dispatch', Object(Zend\Mvc\MvcEvent), Object(Closure))
#16 /var/app/current/htdocs/src/vendor/zendframework/zendframework/library/Zend/Mvc/Application.php(309): Zend\EventManager\EventManager->trigger('dispatch', Object(Zend\Mvc\MvcEvent), Object(Closure))
#17 /var/app/current/htdocs/scripts/zf2.php(186): Zend\Mvc\Application->run()
#18 {main}