Install libsaxon-java by entering the following commands in the terminal:
sudo apt update sudo apt install libsaxon-java
Saxon XSLT Processor
The saxon package is a collection of tools for processing XML documents and implements the XSLT 1.0 recommendation, including XPath 1.0, in its entirety. . Saxon is known to work well for processing DocBook XML documents with the DocBook XSL Stylesheets. Related packages make the process straightforward.