Fatal error: Uncaught Framework\Db\Exception\DatabaseError: Could not connect to database. PDO say: 
SQLSTATE[HY000] [2002] Connection refused in /www/mk.ru.d/v1/pub/Framework/Source/Db/Connection.php:128
Stack trace:
#0 /www/mk.ru.d/v1/pub/Framework/Source/Db/Connection.php(273): Framework\Db\Connection->connect()
#1 /www/mk.ru.d/v1/pub/Framework/Source/Db/Connection.php(316): Framework\Db\Connection->prepare(' SELECT  `artic...', Array)
#2 /www/mk.ru.d/v1/pub/Framework/Source/Db/Mysql/Query.php(185): Framework\Db\Connection->execute(' SELECT  `artic...', Array)
#3 /www/mk.ru.d/v1/pub/Framework/Source/Db/Model.php(52): Framework\Db\Mysql\Query->execute()
#4 /www/mk.ru.d/v1/pub/Source/Article/Infrastructure/PreviousUrl/MysqlPreviousUrlRepository.php(33): Framework\Db\Model->select(Array)
#5 /www/mk.ru.d/v1/pub/Source/Article/Domain/PreviousUrl/ArticlePreviousUrlRedirectService.php(41): Mkru\Article\Infrastructure\PreviousUrl\MysqlPreviousUrlRepository->findByUrl('https://ugra.mk...')
#6 /www/mk.ru.d/v1/pub/Source/Article/Application/Listener/Http/PreviousArticleUrlFinderListener.php(53): Mkru\Article\Domain\PreviousUrl\ArticlePreviousUrlRedirectService->findRedirectForUrl('https://ugra.mk...')
#7 /www/mk.ru.d/v1/pub/composer/vendor/symfony/event-dispatcher/EventDispatcher.php(270): Mkru\Article\Application\Listener\Http\PreviousArticleUrlFinderListener->findCurrentUrl(Object(Framework\WebApplication\Domain\Event\WebOnExceptionEvent), 'web.exception.M...', Object(Symfony\Component\EventDispatcher\EventDispatcher))
#8 /www/mk.ru.d/v1/pub/composer/vendor/symfony/event-dispatcher/EventDispatcher.php(230): Symfony\Component\EventDispatcher\EventDispatcher::Symfony\Component\EventDispatcher\{closure}(Object(Framework\WebApplication\Domain\Event\WebOnExceptionEvent), 'web.exception.M...', Object(Symfony\Component\EventDispatcher\EventDispatcher))
#9 /www/mk.ru.d/v1/pub/composer/vendor/symfony/event-dispatcher/EventDispatcher.php(59): Symfony\Component\EventDispatcher\EventDispatcher->callListeners(Array, 'web.exception.M...', Object(Framework\WebApplication\Domain\Event\WebOnExceptionEvent))
#10 /www/mk.ru.d/v1/pub/Framework/Source/WebApplication/Domain/WebApplication.php(146): Symfony\Component\EventDispatcher\EventDispatcher->dispatch(Object(Framework\WebApplication\Domain\Event\WebOnExceptionEvent), 'web.exception.M...')
#11 /www/mk.ru.d/v1/pub/index.php(11): Framework\WebApplication\Domain\WebApplication->handleRequest(Object(Symfony\Component\HttpFoundation\Request))
#12 {main}
  thrown in /www/mk.ru.d/v1/pub/Framework/Source/Db/Connection.php on line 128