Org.docx4j library

I’m trying to export data from JIRA to Docx template via org.docx4j library.
Although, even the calling of the template hasn’t happened.

WordprocessingMLPackage wordMLPackage = Docx4J.load(new File(".\Test.docx"));
catch (Exception exception) {
logger.error("exception: ", exception);
And I have no exceptions, no traces.

I would be grateful for any suggestions. Maybe you have examples of using this library in Jira plugin?