TYPO3 v7 has reached its end-of-life November 30th, 2018 and is not maintained by the community anymore. Looking for a stable version? Use the version switch on the top left.
There is no further ELTS support. It is recommended that you upgrade your project and use a supported version of TYPO3.
Reference to a file in the file system:*
If the value contains a "/", it is expected to be a reference (absolute or relative) to a file in the file system. There is no support for wildcard characters in the name of the reference.