TYPO3 Core

The LocalizationUtility from Extbase is using $GLOBALS['TSFE']->sL to translate translateFileReference passed to it, but this is no longer available and thus these translations fail. Removing the FE special case and using $GLOBALS['LANG'] instead.

Before:

static protected function translateFileReference($key) {
    if (TYPO3_MODE === 'FE') {
        $value = $GLOBALS['TSFE']->sL($key);
        return $value !== FALSE ? $value : NULL;
    } elseif (is_object($GLOBALS['LANG'])) {
        $value = $GLOBALS['LANG']->sL($key);
        return $value !== '' ? $value : NULL;
    } else {
        return $key;
    }
}

after:

static protected function translateFileReference($key) {
    if (is_object($GLOBALS['LANG'])) {
        $value = $GLOBALS['LANG']->sL($key);
        return $value !== '' ? $value : NULL;
    } else {
        return $key;
    }
}