/usr/share/maven-repo/org/apache/xmlgraphics/fop/debian/fop-debian.jar is in libfop-java 1:2.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/apache/xmlgraphics/fop/debian/../../../../../../java/fop-2.1.jar