The PHP extension "apcu" must be installed and loaded in order to use the APCu backend. | #0 /html/typo3/typo3_src-7.6.55/typo3/sysext/core/Classes/Cache/CacheFactory.php(76): TYPO3\CMS\Core\Cache\Backend\ApcuBackend->__construct('production', Array) #1 /html/typo3/typo3_src-7.6.55/typo3/sysext/core/Classes/Cache/CacheManager.php(273): TYPO3\CMS\Core\Cache\CacheFactory->create('extbase_object', 'TYPO3\\CMS\\Core\\...', '\\TYPO3\\CMS\\Core...', Array) #2 /html/typo3/typo3_src-7.6.55/typo3/sysext/core/Classes/Cache/CacheManager.php(129): TYPO3\CMS\Core\Cache\CacheManager->createCache('extbase_object') #3 /html/typo3/typo3_src-7.6.55/typo3/sysext/extbase/Classes/Object/Container/ClassInfoCache.php(82): TYPO3\CMS\Core\Cache\CacheManager->getCache('extbase_object') #4 /html/typo3/typo3_src-7.6.55/typo3/sysext/extbase/Classes/Object/Container/ClassInfoCache.php(37): TYPO3\CMS\Extbase\Object\Container\ClassInfoCache->initializeLevel2Cache() #5 /html/typo3/typo3_src-7.6.55/typo3/sysext/core/Classes/Utility/GeneralUtility.php(4575): TYPO3\CMS\Extbase\Object\Container\ClassInfoCache->__construct() #6 /html/typo3/typo3_src-7.6.55/typo3/sysext/core/Classes/Utility/GeneralUtility.php(4556): TYPO3\CMS\Core\Utility\GeneralUtility::instantiateClass('TYPO3\\CMS\\Extba...', Array) #7 /html/typo3/typo3_src-7.6.55/typo3/sysext/extbase/Classes/Object/Container/Container.php(97): TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Extba...') #8 /html/typo3/typo3_src-7.6.55/typo3/sysext/extbase/Classes/Object/Container/Container.php(350): TYPO3\CMS\Extbase\Object\Container\Container->getClassInfoCache() #9 /html/typo3/typo3_src-7.6.55/typo3/sysext/extbase/Classes/Object/Container/Container.php(173): TYPO3\CMS\Extbase\Object\Container\Container->getClassInfo('FluidTYPO3\\Flux...') #10 /html/typo3/typo3_src-7.6.55/typo3/sysext/extbase/Classes/Object/Container/Container.php(126): TYPO3\CMS\Extbase\Object\Container\Container->getInstanceInternal('FluidTYPO3\\Flux...', Array) #11 /html/typo3/typo3_src-7.6.55/typo3/sysext/extbase/Classes/Object/ObjectManager.php(99): TYPO3\CMS\Extbase\Object\Container\Container->getInstance('TYPO3\\CMS\\Extba...', Array) #12 /html/typo3/typo3conf/ext/vhs/Classes/Service/AssetService.php(101): TYPO3\CMS\Extbase\Object\ObjectManager->get('TYPO3\\CMS\\Extba...') #13 /html/typo3/typo3conf/ext/vhs/Classes/Service/AssetService.php(153): FluidTYPO3\Vhs\Service\AssetService->buildAll(Array, Object(TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController), false) #14 [internal function]: FluidTYPO3\Vhs\Service\AssetService->buildAllUncached(Array, Object(TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController)) #15 /html/typo3/typo3_src-7.6.55/typo3/sysext/core/Classes/Utility/GeneralUtility.php(4416): call_user_func_array(Array, Array) #16 /html/typo3/typo3_src-7.6.55/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php(3748): TYPO3\CMS\Core\Utility\GeneralUtility::callUserFunction('FluidTYPO3\\Vhs\\...', Array, Object(TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController)) #17 /html/typo3/typo3_src-7.6.55/typo3/sysext/frontend/Classes/Http/RequestHandler.php(241): TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->processOutput() #18 /html/typo3/typo3_src-7.6.55/typo3/sysext/core/Classes/Core/Bootstrap.php(311): TYPO3\CMS\Frontend\Http\RequestHandler->handleRequest(Object(TYPO3\CMS\Core\Http\ServerRequest)) #19 /html/typo3/typo3_src-7.6.55/typo3/sysext/frontend/Classes/Http/Application.php(78): TYPO3\CMS\Core\Core\Bootstrap->handleRequest(Object(TYPO3\CMS\Core\Http\ServerRequest)) #20 /html/typo3/typo3_src-7.6.55/index.php(33): TYPO3\CMS\Frontend\Http\Application->run() #21 /html/typo3/typo3_src-7.6.55/index.php(34): {closure}() #22 {main}