Exception: Warning: file_put_contents(/var/www/html/var/cache//mage-tags/mage---6c3_CONFIG): failed to open stream: Permission denied in /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php on line 691 in /var/www/html/vendor/magento/framework/App/ErrorHandler.php:61 Stack trace: #0 [internal function]: Magento\Framework\App\ErrorHandler->handler(2, 'file_put_conten...', '/var/www/html/v...', 691, Array) #1 /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php(691): file_put_contents('/var/www/html/v...', '6c3_CRON_GROUPS...', 10) #2 /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php(203): Cm_Cache_Backend_File->_updateIdsTags(Array, Array, 'merge') #3 /var/www/html/vendor/magento/zendframework1/library/Zend/Cache/Core.php(390): Cm_Cache_Backend_File->save('{"index":{"sche...', '6c3_CRON_GROUPS...', Array, NULL) #4 /var/www/html/vendor/magento/framework/Cache/Core.php(74): Zend_Cache_Core->save('{"index":{"sche...', '6c3_CRON_GROUPS...', Array, NULL, 8) #5 /var/www/html/vendor/magento/framework/Cache/Frontend/Adapter/Zend.php(63): Magento\Framework\Cache\Core->save('{"index":{"sche...', 'CRON_GROUPS_CON...', Array, NULL) #6 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(75): Magento\Framework\Cache\Frontend\Adapter\Zend->save('{"index":{"sche...', 'cron_groups_con...', Array, NULL) #7 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/TagScope.php(52): Magento\Framework\Cache\Frontend\Decorator\Bare->save('{"index":{"sche...', 'cron_groups_con...', Array, NULL) #8 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(75): Magento\Framework\Cache\Frontend\Decorator\TagScope->save('{"index":{"sche...', 'cron_groups_con...', Array, NULL) #9 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(75): Magento\Framework\Cache\Frontend\Decorator\Bare->save('{"index":{"sche...', 'cron_groups_con...', Array, NULL) #10 /var/www/html/vendor/magento/framework/App/Cache/Type/AccessProxy.php(85): Magento\Framework\Cache\Frontend\Decorator\Bare->save('{"index":{"sche...', 'cron_groups_con...', Array, NULL) #11 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(75): Magento\Framework\App\Cache\Type\AccessProxy->save('{"index":{"sche...', 'cron_groups_con...', Array, NULL) #12 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/TagScope.php(52): Magento\Framework\Cache\Frontend\Decorator\Bare->save('{"index":{"sche...', 'cron_groups_con...', Array, NULL) #13 /var/www/html/vendor/magento/framework/Config/Data.php(106): Magento\Framework\Cache\Frontend\Decorator\TagScope->save('{"index":{"sche...', 'cron_groups_con...', Array) #14 /var/www/html/vendor/magento/framework/Config/Data.php(93): Magento\Framework\Config\Data->initData() #15 /var/www/html/vendor/magento/module-cron/Model/Groups/Config/Data.php(29): Magento\Framework\Config\Data->__construct(Object(Magento\Cron\Model\Groups\Config\Reader\Xml), Object(Magento\Framework\App\Cache\Type\Config), 'cron_groups_con...', NULL) #16 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Magento\Cron\Model\Groups\Config\Data->__construct(Object(Magento\Cron\Model\Groups\Config\Reader\Xml), Object(Magento\Framework\App\Cache\Type\Config), 'cron_groups_con...', NULL) #17 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Cron\\Mo...', Array) #18 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Cron\\Mo...') #19 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Cron\\Mo...') #20 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Cron\\Mo...') #21 /var/www/html/vendor/magento/framework/Interception/PluginList/PluginList.php(174): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Cron\\Mo...') #22 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(144): Magento\Framework\Interception\PluginList\PluginList->getPlugin('Magento\\Framewo...', 'cron_system_con...') #23 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Config\Initial\Converter\Interceptor->Magento\Framework\Interception\{closure}(Object(DOMDocument)) #24 /var/www/html/generated/code/Magento/Framework/App/Config/Initial/Converter/Interceptor.php(23): Magento\Framework\App\Config\Initial\Converter\Interceptor->___callPlugins('convert', Array, Array) #25 /var/www/html/vendor/magento/framework/App/Config/Initial/Reader.php(123): Magento\Framework\App\Config\Initial\Converter\Interceptor->convert(Object(DOMDocument)) #26 /var/www/html/generated/code/Magento/Framework/App/Config/Initial/Reader/Proxy.php(95): Magento\Framework\App\Config\Initial\Reader->read() #27 /var/www/html/vendor/magento/framework/App/Config/Initial.php(55): Magento\Framework\App\Config\Initial\Reader\Proxy->read() #28 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Magento\Framework\App\Config\Initial->__construct(Object(Magento\Framework\App\Config\Initial\Reader\Proxy), Object(Magento\Framework\App\Cache\Type\Config), NULL) #29 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array) #30 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #31 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Framewo...') #32 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #33 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(125): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Framewo...') #34 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(86): Magento\Framework\ObjectManager\Factory\Compiled->parseArray(Array) #35 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('systemConfigPos...') #36 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('systemConfigPos...') #37 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Config\\...') #38 /var/www/html/generated/code/Magento/Config/App/Config/Type/System/Reader/Proxy.php(84): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Config\\...') #39 /var/www/html/generated/code/Magento/Config/App/Config/Type/System/Reader/Proxy.php(95): Magento\Config\App\Config\Type\System\Reader\Proxy->_getSubject() #40 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(395): Magento\Config\App\Config\Type\System\Reader\Proxy->read() #41 /var/www/html/vendor/magento/framework/Cache/LockGuardedCacheLoader.php(136): Magento\Config\App\Config\Type\System->readData() #42 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(281): Magento\Framework\Cache\LockGuardedCacheLoader->lockedLoadData('SYSTEM_CONFIG', Object(Closure), Object(Closure), Object(Closure)) #43 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(207): Magento\Config\App\Config\Type\System->loadDefaultScopeData('default') #44 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(181): Magento\Config\App\Config\Type\System->getWithParts('default/newreli...') #45 /var/www/html/vendor/magento/framework/App/Config.php(132): Magento\Config\App\Config\Type\System->get('default/newreli...') #46 /var/www/html/vendor/magento/framework/App/Config.php(80): Magento\Framework\App\Config->get('system', 'default/newreli...') #47 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Config->getValue('newrelicreporti...', 'default', NULL) #48 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Config\Interceptor->___callParent('getValue', Array) #49 /var/www/html/app/code/MageWorx/ShippingRules/Model/Plugin/AddMethods.php(131): Magento\Framework\App\Config\Interceptor->Magento\Framework\Interception\{closure}('newrelicreporti...', 'default', NULL) #50 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(135): MageWorx\ShippingRules\Model\Plugin\AddMethods->aroundGetValue(Object(Magento\Framework\App\Config\Interceptor), Object(Closure), 'newrelicreporti...', 'default', NULL) #51 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Config\Interceptor->Magento\Framework\Interception\{closure}('newrelicreporti...', 'default', NULL) #52 /var/www/html/generated/code/Magento/Framework/App/Config/Interceptor.php(23): Magento\Framework\App\Config\Interceptor->___callPlugins('getValue', Array, NULL) #53 /var/www/html/vendor/magento/framework/App/Config.php(93): Magento\Framework\App\Config\Interceptor->getValue('newrelicreporti...', 'default', NULL) #54 /var/www/html/vendor/magento/module-new-relic-reporting/Model/Config.php(94): Magento\Framework\App\Config->isSetFlag('newrelicreporti...') #55 /var/www/html/vendor/magento/module-new-relic-reporting/Plugin/HttpPlugin.php(49): Magento\NewRelicReporting\Model\Config->isNewRelicEnabled() #56 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(121): Magento\NewRelicReporting\Plugin\HttpPlugin->beforeCatchException(Object(Magento\Framework\App\Http\Interceptor), Object(Magento\Framework\App\Bootstrap), Object(Exception)) #57 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Bootstrap), Object(Exception)) #58 /var/www/html/generated/code/Magento/Framework/App/Http/Interceptor.php(23): Magento\Framework\App\Http\Interceptor->___callPlugins('catchException', Array, Array) #59 /var/www/html/vendor/magento/framework/App/Bootstrap.php(269): Magento\Framework\App\Http\Interceptor->catchException(Object(Magento\Framework\App\Bootstrap), Object(Exception)) #60 /var/www/html/pub/index.php(28): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #61 {main}