An Error occurred while handling another error:
PDOException: SQLSTATE[HY000] [2002] No such file or directory in /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Connection.php:722
Stack trace:
#0 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Connection.php(722): PDO->__construct('mysql:host=loca...', 'nyamkin_ru', 'ytzYuVPwMOqy3s0...', NULL)
#1 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Connection.php(637): yii\db\Connection->createPdoInstance()
#2 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Connection.php(1067): yii\db\Connection->open()
#3 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Command.php(263): yii\db\Connection->getMasterPdo()
#4 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Command.php(1115): yii\db\Command->prepare(false)
#5 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/frontend/controllers/SiteController.php(82): yii\db\Command->execute()
#6 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/Controller.php(176): frontend\controllers\SiteController->beforeAction(Object(yii\web\ErrorAction))
#7 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/Module.php(552): yii\base\Controller->runAction('error', Array)
#8 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/web/ErrorHandler.php(109): yii\base\Module->runAction('site/error')
#9 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/ErrorHandler.php(152): yii\web\ErrorHandler->renderException(Object(yii\web\NotFoundHttpException))
#10 [internal function]: yii\base\ErrorHandler->handleException(Object(yii\web\NotFoundHttpException))
#11 {main}

Next yii\db\Exception: SQLSTATE[HY000] [2002] No such file or directory in /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Connection.php:648
Stack trace:
#0 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Connection.php(1067): yii\db\Connection->open()
#1 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Command.php(263): yii\db\Connection->getMasterPdo()
#2 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/db/Command.php(1115): yii\db\Command->prepare(false)
#3 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/frontend/controllers/SiteController.php(82): yii\db\Command->execute()
#4 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/Controller.php(176): frontend\controllers\SiteController->beforeAction(Object(yii\web\ErrorAction))
#5 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/Module.php(552): yii\base\Controller->runAction('error', Array)
#6 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/web/ErrorHandler.php(109): yii\base\Module->runAction('site/error')
#7 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/ErrorHandler.php(152): yii\web\ErrorHandler->renderException(Object(yii\web\NotFoundHttpException))
#8 [internal function]: yii\base\ErrorHandler->handleException(Object(yii\web\NotFoundHttpException))
#9 {main}
Additional Information:
Array
(
    [0] => HY000
    [1] => 2002
    [2] => No such file or directory
)

Previous exception:
yii\base\InvalidRouteException: Unable to resolve the request "flag/flag/bookmarks/10505". in /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/Module.php:561
Stack trace:
#0 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/web/Application.php(103): yii\base\Module->runAction('flag/flag/bookm...', Array)
#1 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/Application.php(384): yii\web\Application->handleRequest(Object(yii\web\Request))
#2 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/frontend/web/index.php(20): yii\base\Application->run()
#3 {main}

Next yii\web\NotFoundHttpException: Page not found. in /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/web/Application.php:115
Stack trace:
#0 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/vendor/yiisoft/yii2/base/Application.php(384): yii\web\Application->handleRequest(Object(yii\web\Request))
#1 /var/www/nyamkin_ru_usr/data/www/nyamkin.ru/frontend/web/index.php(20): yii\base\Application->run()
#2 {main}