Exception occurred while logging exception: Failed to connect to the database: An exception occured in driver: SQLSTATE[HY000] [2002] No route to host
#0 /opt/app-root/src/lib/composer/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(429): OC\DB\Connection->connect()
#1 /opt/app-root/src/lib/composer/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(389): Doctrine\DBAL\Connection->getDatabasePlatformVersion()
#2 /opt/app-root/src/lib/composer/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(328): Doctrine\DBAL\Connection->detectDatabasePlatform()
#3 /opt/app-root/src/lib/composer/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(623): Doctrine\DBAL\Connection->getDatabasePlatform()
#4 /opt/app-root/src/lib/private/DB/Connection.php(146): Doctrine\DBAL\Connection->setTransactionIsolation(2)
#5 /opt/app-root/src/lib/composer/doctrine/dbal/lib/Doctrine/DBAL/DriverManager.php(172): OC\DB\Connection->__construct(Array, Object(Doctrine\DBAL\Driver\PDOMySql\Driver), Object(Doctrine\DBAL\Configuration), Object(Doctrine\Common\EventManager))
#6 /opt/app-root/src/lib/private/DB/ConnectionFactory.php(138): Doctrine\DBAL\DriverManager::getConnection(Array, Object(Doctrine\DBAL\Configuration), Object(Doctrine\Common\EventManager))
#7 /opt/app-root/src/lib/private/Server.php(464): OC\DB\ConnectionFactory->getConnection('mysql', Array)
#8 /opt/app-root/src/lib/composer/pimple/pimple/src/Pimple/Container.php(113): OC\Server->OC\{closure}(Object(OC\Server))
#9 /opt/app-root/src/lib/private/AppFramework/Utility/SimpleContainer.php(111): Pimple\Container->offsetGet('DatabaseConnect...')
#10 /opt/app-root/src/lib/private/ServerContainer.php(87): OC\AppFramework\Utility\SimpleContainer->query('DatabaseConnect...')
#11 /opt/app-root/src/lib/private/Server.php(1111): OC\ServerContainer->query('DatabaseConnect...')
#12 /opt/app-root/src/lib/private/Server.php(225): OC\Server->getDatabaseConnection()
#13 /opt/app-root/src/lib/composer/pimple/pimple/src/Pimple/Container.php(113): OC\Server->OC\{closure}(Object(OC\Server))
#14 /opt/app-root/src/lib/private/AppFramework/Utility/SimpleContainer.php(111): Pimple\Container->offsetGet('AccountMapper')
#15 /opt/app-root/src/lib/private/ServerContainer.php(87): OC\AppFramework\Utility\SimpleContainer->query('AccountMapper')
#16 /opt/app-root/src/lib/private/Server.php(963): OC\ServerContainer->query('AccountMapper')
#17 /opt/app-root/src/lib/private/Server.php(230): OC\Server->getAccountMapper()
#18 /opt/app-root/src/lib/composer/pimple/pimple/src/Pimple/Container.php(113): OC\Server->OC\{closure}(Object(OC\Server))
#19 /opt/app-root/src/lib/private/AppFramework/Utility/SimpleContainer.php(111): Pimple\Container->offsetGet('UserManager')
#20 /opt/app-root/src/lib/private/ServerContainer.php(87): OC\AppFramework\Utility\SimpleContainer->query('UserManager')
#21 /opt/app-root/src/lib/private/Server.php(956): OC\ServerContainer->query('UserManager')
#22 /opt/app-root/src/lib/private/Server.php(270): OC\Server->getUserManager()
#23 /opt/app-root/src/lib/composer/pimple/pimple/src/Pimple/Container.php(113): OC\Server->OC\{closure}(Object(OC\Server))
#24 /opt/app-root/src/lib/private/AppFramework/Utility/SimpleContainer.php(111): Pimple\Container->offsetGet('UserSession')
#25 /opt/app-root/src/lib/private/ServerContainer.php(87): OC\AppFramework\Utility\SimpleContainer->query('UserSession')
#26 /opt/app-root/src/lib/private/Server.php(980): OC\ServerContainer->query('UserSession')
#27 /opt/app-root/src/lib/private/Server.php(510): OC\Server->getUserSession()
#28 /opt/app-root/src/lib/composer/pimple/pimple/src/Pimple/Container.php(113): OC\Server->OC\{closure}(Object(OC\Server))
#29 /opt/app-root/src/lib/private/AppFramework/Utility/SimpleContainer.php(111): Pimple\Container->offsetGet('AppManager')
#30 /opt/app-root/src/lib/private/ServerContainer.php(87): OC\AppFramework\Utility\SimpleContainer->query('AppManager')
#31 /opt/app-root/src/lib/private/Server.php(1298): OC\ServerContainer->query('AppManager')
#32 /opt/app-root/src/lib/private/legacy/app.php(313): OC\Server->getAppManager()
#33 /opt/app-root/src/lib/private/legacy/app.php(107): OC_App::getEnabledApps()
#34 /opt/app-root/src/lib/base.php(579): OC_App::loadApps(Array)
#35 /opt/app-root/src/lib/base.php(1003): OC::init()
#36 /opt/app-root/src/index.php(47): require_once('/opt/app-root/s...')
#37 {main}