Exception: Warning: SessionHandler::read(): open(/var/lib/php/session/sess_aq6oc568c59rs7eijg60845o3d, O_RDWR) failed: No space left on device (28) in /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Session/SaveHandler/Native.php on line 22 in /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/App/ErrorHandler.php:61 Stack trace: #0 [internal function]: Magento\Framework\App\ErrorHandler->handler() #1 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Session/SaveHandler/Native.php(22): SessionHandler->read() #2 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Session/SaveHandler.php(139): Magento\Framework\Session\SaveHandler\Native->read() #3 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Session/SaveHandler.php(84): Magento\Framework\Session\SaveHandler->callSafely() #4 [internal function]: Magento\Framework\Session\SaveHandler->read() #5 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Session/SessionManager.php(204): session_start() #6 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\Session\SessionManager->start() #7 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\Session\Generic\Interceptor->___callParent() #8 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\Session\Generic\Interceptor->Magento\Framework\Interception\{closure}() #9 /var/www/vhosts/blcost.com/httpdocs/generated/code/Magento/Framework/Session/Generic/Interceptor.php(23): Magento\Framework\Session\Generic\Interceptor->___callPlugins() #10 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Session/SessionManager.php(141): Magento\Framework\Session\Generic\Interceptor->start() #11 /var/www/vhosts/blcost.com/httpdocs/generated/code/Magento/Framework/Session/Generic/Interceptor.php(14): Magento\Framework\Session\SessionManager->__construct() #12 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Magento\Framework\Session\Generic\Interceptor->__construct() #13 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject() #14 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create() #15 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get() #16 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create() #17 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get() #18 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create() #19 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get() #20 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create() #21 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get() #22 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Compiled->create() #23 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/PluginList/PluginList.php(174): Magento\Framework\ObjectManager\ObjectManager->get() #24 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(119): Magento\Framework\Interception\PluginList\PluginList->getPlugin() #25 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Context\Interceptor->Magento\Framework\Interception\{closure}() #26 /var/www/vhosts/blcost.com/httpdocs/generated/code/Magento/Framework/App/Http/Context/Interceptor.php(32): Magento\Framework\App\Http\Context\Interceptor->___callPlugins() #27 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/App/Response/Http.php(108): Magento\Framework\App\Http\Context\Interceptor->getVaryString() #28 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/module-page-cache/Model/App/Response/HttpPlugin.php(29): Magento\Framework\App\Response\Http->sendVary() #29 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(121): Magento\PageCache\Model\App\Response\HttpPlugin->beforeSendResponse() #30 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Response\Http\Interceptor->Magento\Framework\Interception\{closure}() #31 /var/www/vhosts/blcost.com/httpdocs/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(23): Magento\Framework\App\Response\Http\Interceptor->___callPlugins() #32 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/App/ExceptionHandler.php(103): Magento\Framework\App\Response\Http\Interceptor->sendResponse() #33 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/App/ExceptionHandler.php(70): Magento\Framework\App\ExceptionHandler->handleDeveloperMode() #34 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/App/Http.php(156): Magento\Framework\App\ExceptionHandler->handle() #35 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->catchException() #36 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor->___callParent() #37 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() #38 /var/www/vhosts/blcost.com/httpdocs/generated/code/Magento/Framework/App/Http/Interceptor.php(23): Magento\Framework\App\Http\Interceptor->___callPlugins() #39 /var/www/vhosts/blcost.com/httpdocs/vendor/magento/framework/App/Bootstrap.php(269): Magento\Framework\App\Http\Interceptor->catchException() #40 /var/www/vhosts/blcost.com/httpdocs/index.php(39): Magento\Framework\App\Bootstrap->run() #41 {main}