There is a problem downloading the dependencies for Saxon-HE from Maven using Ivy. The xmlresolver-5.1.1.jar does not download but it's classified jar xmlresolver-data-5.1.1.jar does. Both jars are listed as dependencies in the pom for Saxon-HE.
You can read about it in more detail on the following thread: https://github.com/checkstyle/checkstyle/issues/12969 You can execute an ant build for the same at : https://github.com/Fernal73/CheckStyleSample/ Regards, Linus.