ReflectionException: Class Magento\Theme\Model\ResourceModel\Theme\Collection\Proxy does not exist in /var/www/html/vendor/magento/framework/Code/Reader/ClassReader.php:26
Stack trace:
#0 /var/www/html/vendor/magento/framework/Code/Reader/ClassReader.php(26): ReflectionClass->__construct('Magento\\Theme\\M...')
#1 /var/www/html/vendor/magento/framework/ObjectManager/Definition/Runtime.php(54): Magento\Framework\Code\Reader\ClassReader->getConstructor('Magento\\Theme\\M...')
#2 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(48): Magento\Framework\ObjectManager\Definition\Runtime->getParameters('Magento\\Theme\\M...')
#3 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Magento\\Theme\\M...')
#4 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(167): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Theme\\M...')
#5 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(273): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgument(Array, 'Magento\\Framewo...', NULL, 'themeList', 'Magento\\Theme\\M...')
#6 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(236): Magento\Framework\ObjectManager\Factory\AbstractFactory->getResolvedArgument('Magento\\Theme\\M...', Array, Array)
#7 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(34): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgumentsInRuntime('Magento\\Theme\\M...', Array, Array)
#8 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(59): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->_resolveArguments('Magento\\Theme\\M...', Array, Array)
#9 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Magento\\Theme\\M...')
#10 /var/www/html/generated/code/Magento/Theme/Model/Config/Processor/DesignTheme/Proxy.php(84): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Theme\\M...')
#11 /var/www/html/generated/code/Magento/Theme/Model/Config/Processor/DesignTheme/Proxy.php(95): Magento\Theme\Model\Config\Processor\DesignTheme\Proxy->_getSubject()
#12 /var/www/html/vendor/magento/framework/App/Config/PreProcessorComposite.php(35): Magento\Theme\Model\Config\Processor\DesignTheme\Proxy->process(Array)
#13 /var/www/html/vendor/magento/module-config/App/Config/Type/System/Reader.php(60): Magento\Framework\App\Config\PreProcessorComposite->process(Array)
#14 /var/www/html/generated/code/Magento/Config/App/Config/Type/System/Reader/Proxy.php(95): Magento\Config\App\Config\Type\System\Reader->read()
#15 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(371): Magento\Config\App\Config\Type\System\Reader\Proxy->read()
#16 /var/www/html/vendor/magento/framework/Cache/LockGuardedCacheLoader.php(79): Magento\Config\App\Config\Type\System->readData()
#17 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(261): Magento\Framework\Cache\LockGuardedCacheLoader->lockedLoadData('SYSTEM_CONFIG', Object(Closure), Object(Closure), Object(Closure))
#18 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(195): Magento\Config\App\Config\Type\System->loadDefaultScopeData('default')
#19 /var/www/html/vendor/magento/module-config/App/Config/Type/System.php(169): Magento\Config\App\Config\Type\System->getWithParts('default/newreli...')
#20 /var/www/html/vendor/magento/framework/App/Config.php(132): Magento\Config\App\Config\Type\System->get('default/newreli...')
#21 /var/www/html/vendor/magento/framework/App/Config.php(80): Magento\Framework\App\Config->get('system', 'default/newreli...')
#22 /var/www/html/vendor/magento/framework/App/Config.php(93): Magento\Framework\App\Config->getValue('newrelicreporti...', 'default', NULL)
#23 /var/www/html/vendor/magento/module-new-relic-reporting/Model/Config.php(94): Magento\Framework\App\Config->isSetFlag('newrelicreporti...')
#24 /var/www/html/vendor/magento/module-new-relic-reporting/Plugin/HttpPlugin.php(49): Magento\NewRelicReporting\Model\Config->isNewRelicEnabled()
#25 /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(ReflectionException))
#26 /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(ReflectionException))
#27 /var/www/html/generated/code/Magento/Framework/App/Http/Interceptor.php(39): Magento\Framework\App\Http\Interceptor->___callPlugins('catchException', Array, Array)
#28 /var/www/html/vendor/magento/framework/App/Bootstrap.php(267): Magento\Framework\App\Http\Interceptor->catchException(Object(Magento\Framework\App\Bootstrap), Object(ReflectionException))
#29 /var/www/html/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor))
#30 {main}