TYPO3 Core

TYPO3\CMS\Core\Resource\InaccessibleFolder

extends from

TYPO3\CMS\Core\Resource\InaccessibleFolder\Folder

in the "getFiles" of InaccessibleFolder teh arguments $sort = '', $sortRev = false are missing

just add those

#1: PHP Warning: Declaration of TYPO3\CMS\Core\Resource\InaccessibleFolder::getFiles($start = 0, $numberOfItems = 0, $filterMode = self::FILTER_MODE_USE_OWN_AND_STORAGE_FILTERS, $recursive = false) should be compatible with TYPO3\CMS\Core\Resource\Folder::getFiles($start = 0, $numberOfItems = 0, $filterMode = self::FILTER_MODE_USE_OWN_AND_STORAGE_FILTERS, $recursive = false, $sort = '', $sortRev = false) in /Users/poppinga/htdocs/typo3/typo3_src-7.6.4/typo3/sysext/core/Classes/Resource/InaccessibleFolder.php line 268 (More information)