Magento 2 Directory '' is not under storage root path
App: Magento 2.3.7-p2 When executing MagentoCmsControllerAdminhtmlWysiwygImagesUpload::execute $this->getStorage()->getSession()->getCurrentPath()= '' although in the previous call MagentoCmsControllerAdminhtmlWysiwygImagesContents::execute the current Path was successfully saved via $this->_initAction()->_saveSessionCurrentPath(). I do not understand why $this->getStorage()->getSession()->getCurrentPath() = ''.