Fatal error: Uncaught BadFunctionCallException: TYPO3 Fatal Error: Extension key "localizer" is NOT loaded! in /var/www/html/typo3/sysext/core/Classes/Utility/ExtensionManagementUtility.php:134 Stack trace: #0 /var/www/html/typo3temp/var/cache/code/core/ext_localconf_c53af60fb52d5fc6bfcad14b16e2b96c023dfda0.php(2102): TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extPath('localizer') #1 /var/www/html/typo3/sysext/core/Classes/Cache/Backend/SimpleFileBackend.php(378): require('/var/www/html/t...') #2 /var/www/html/typo3/sysext/core/Classes/Cache/Frontend/PhpFrontend.php(101): TYPO3\CMS\Core\Cache\Backend\SimpleFileBackend->require('ext_localconf_c...') #3 /var/www/html/typo3/sysext/core/Classes/Utility/ExtensionManagementUtility.php(1559): TYPO3\CMS\Core\Cache\Frontend\PhpFrontend->require('ext_localconf_c...') #4 /var/www/html/typo3/sysext/core/Classes/Core/Bootstrap.php(283): TYPO3\CMS\Core\Utility\ExtensionManagementUtility::loadExtLocalconf(true, Object(TYPO3\CMS\Core\Cache\Frontend\PhpFrontend)) #5 /var/www/html/ in /var/www/html/typo3/sysext/core/Classes/Utility/ExtensionManagementUtility.php on line 134