CredisException: MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error. in /var/www/magento/vendor/colinmollenhour/credis/Client.php:1197 Stack trace: #0 /var/www/magento/vendor/colinmollenhour/credis/Client.php(637): Credis_Client->__call('select', Array) #1 /var/www/magento/vendor/colinmollenhour/php-redis-session-abstract/src/Cm/RedisSession/Handler.php(422): Credis_Client->select('2') #2 /var/www/magento/vendor/magento/framework/Session/SaveHandler/Redis.php(95): Cm\RedisSession\Handler->read('sess_vj4idf6cj6...') #3 /var/www/magento/vendor/magento/framework/Session/SaveHandler.php(80): Magento\Framework\Session\SaveHandler\Redis->read('vj4idf6cj63l88t...') #4 [internal function]: Magento\Framework\Session\SaveHandler->read('vj4idf6cj63l88t...') #5 /var/www/magento/vendor/magento/framework/Session/SessionManager.php(206): session_start() #6 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\Session\SessionManager->start() #7 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\Session\Generic\Interceptor->___callParent('start', Array) #8 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\Session\Generic\Interceptor->Magento\Framework\Interception\{closure}() #9 /var/www/magento/generated/code/Magento/Framework/Session/Generic/Interceptor.php(26): Magento\Framework\Session\Generic\Interceptor->___callPlugins('start', Array, Array) #10 /var/www/magento/vendor/magento/framework/Session/SessionManager.php(140): Magento\Framework\Session\Generic\Interceptor->start() #11 /var/www/magento/generated/code/Magento/Framework/Session/Generic/Interceptor.php(14): Magento\Framework\Session\SessionManager->__construct(Object(Magento\Framework\App\Request\Http), Object(Magento\Framework\Session\SidResolver\Proxy), Object(Magento\Framework\Session\Config), Object(Magento\Framework\Session\SaveHandler), Object(Magento\Framework\Session\Validator), Object(Magento\Framework\Session\Storage), Object(Magento\Framework\Stdlib\Cookie\PhpCookieManager), Object(Magento\Framework\Stdlib\Cookie\CookieMetadataFactory), Object(Magento\Framework\App\State\Interceptor), NULL) #12 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(116): Magento\Framework\Session\Generic\Interceptor->__construct(Object(Magento\Framework\App\Request\Http), Object(Magento\Framework\Session\SidResolver\Proxy), Object(Magento\Framework\Session\Config), Object(Magento\Framework\Session\SaveHandler), Object(Magento\Framework\Session\Validator), Object(Magento\Framework\Session\Storage), Object(Magento\Framework\Stdlib\Cookie\PhpCookieManager), Object(Magento\Framework\Stdlib\Cookie\CookieMetadataFactory), Object(Magento\Framework\App\State\Interceptor), NULL) #13 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array) #14 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #15 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Framewo...') #16 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Custome...') #17 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Custome...') #18 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Checkou...') #19 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Checkou...') #20 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Persist...') #21 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Persist...') #22 /var/www/magento/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Persist...') #23 /var/www/magento/vendor/magento/framework/Interception/PluginList/PluginList.php(250): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Persist...') #24 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(119): Magento\Framework\Interception\PluginList\PluginList->getPlugin('Magento\\Framewo...', 'persistent_page...') #25 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Context\Interceptor->Magento\Framework\Interception\{closure}() #26 /var/www/magento/generated/code/Magento/Framework/App/Http/Context/Interceptor.php(39): Magento\Framework\App\Http\Context\Interceptor->___callPlugins('getVaryString', Array, Array) #27 /var/www/magento/vendor/magento/framework/App/Response/Http.php(109): Magento\Framework\App\Http\Context\Interceptor->getVaryString() #28 /var/www/magento/vendor/magento/module-page-cache/Model/App/Response/HttpPlugin.php(25): Magento\Framework\App\Response\Http->sendVary() #29 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(121): Magento\PageCache\Model\App\Response\HttpPlugin->beforeSendResponse(Object(Magento\Framework\App\Response\Http\Interceptor)) #30 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Response\Http\Interceptor->Magento\Framework\Interception\{closure}() #31 /var/www/magento/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(26): Magento\Framework\App\Response\Http\Interceptor->___callPlugins('sendResponse', Array, Array) #32 /var/www/magento/vendor/magento/framework/App/Http.php(206): Magento\Framework\App\Response\Http\Interceptor->sendResponse() #33 /var/www/magento/vendor/magento/framework/App/Http.php(177): Magento\Framework\App\Http->handleDeveloperMode(Object(Magento\Framework\App\Bootstrap), Object(CredisException)) #34 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->catchException(Object(Magento\Framework\App\Bootstrap), Object(CredisException)) #35 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor->___callParent('catchException', Array) #36 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Bootstrap), Object(CredisException)) #37 /var/www/magento/generated/code/Magento/Framework/App/Http/Interceptor.php(26): Magento\Framework\App\Http\Interceptor->___callPlugins('catchException', Array, Array) #38 /var/www/magento/vendor/magento/framework/App/Bootstrap.php(267): Magento\Framework\App\Http\Interceptor->catchException(Object(Magento\Framework\App\Bootstrap), Object(CredisException)) #39 /var/www/magento/index.php(159): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #40 {main}