TYPO3 Core

If you try to update an extension, which directory isn't writeable for webserver user you don't get a message with the problem.

The issue is in function TYPO3\CMS\Extensionmanager\Utility\FileHandlingUtility::removeDirectory():L247 it calls

$this->getLanguageService()->getLL('clearMakeExtDir_could_not_remove_dir')

which returns an empty string. It seams locallang_mod_tools_em.xlf isn't loaded at this point (in ajax context) ... or the way to get the LL is false for >=6.2.