/usr/lib/gambas3/gb.xml.xslt.so.0 is in gambas3-gb-xml-xslt 3.5.4-2+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/gambas3/gb.xml.xslt.so.0.0.0
/usr/lib/gambas3/gb.xml.xslt.so.0.0.0