Error: During the import of the "Sites.xml" from the package "TYPO3.NeosDemoTypo3Org" an exception occurred: Error: During import an exception occurred: "Exception while property mapping for target type "TYPO3\Media\Domain\Model\ImageVariant", at property path "": Unable to open image /var/www/neos/Data/Temporary/Development/ResourceFiles/a0fcd1a8d6529424beaa69e070320ee9dc387723-1423036267.3692-3282".