Exception: Warning: file_put_contents(/var/www/html/var/cache//mage-tags/mage---40d_COMPILED_CONFIG): failed to open stream: Permission denied in /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php on line 710 in /var/www/html/vendor/magento/framework/App/ErrorHandler.php:61
Stack trace:
#0 [internal function]: Magento\Framework\App\ErrorHandler->handler()
#1 /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php(710): file_put_contents()
#2 /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php(204): Cm_Cache_Backend_File->_updateIdsTags()
#3 /var/www/html/vendor/magento/zendframework1/library/Zend/Cache/Core.php(390): Cm_Cache_Backend_File->save()
#4 /var/www/html/vendor/magento/framework/Cache/Core.php(74): Zend_Cache_Core->save()
#5 /var/www/html/vendor/magento/framework/Cache/Frontend/Adapter/Zend.php(63): Magento\Framework\Cache\Core->save()
#6 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(75): Magento\Framework\Cache\Frontend\Adapter\Zend->save()
#7 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/TagScope.php(52): Magento\Framework\Cache\Frontend\Decorator\Bare->save()
#8 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(75): Magento\Framework\Cache\Frontend\Decorator\TagScope->save()
#9 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(75): Magento\Framework\Cache\Frontend\Decorator\Bare->save()
#10 /var/www/html/vendor/magento/framework/App/Cache/Type/AccessProxy.php(85): Magento\Framework\Cache\Frontend\Decorator\Bare->save()
#11 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(75): Magento\Framework\App\Cache\Type\AccessProxy->save()
#12 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/TagScope.php(52): Magento\Framework\Cache\Frontend\Decorator\Bare->save()
#13 /var/www/html/vendor/magento/framework/Interception/PluginList/PluginList.php(311): Magento\Framework\Cache\Frontend\Decorator\TagScope->save()
#14 /var/www/html/vendor/magento/framework/Interception/PluginList/PluginList.php(266): Magento\Framework\Interception\PluginList\PluginList->_loadScopedData()
#15 /var/www/html/generated/code/Magento/Framework/App/Http/Interceptor.php(35): Magento\Framework\Interception\PluginList\PluginList->getNext()
#16 /var/www/html/vendor/magento/framework/App/Bootstrap.php(267): Magento\Framework\App\Http\Interceptor->catchException()
#17 /var/www/html/pub/index.php(41): Magento\Framework\App\Bootstrap->run()
#18 {main}