Hi Lolo,
Thank you for additional information. Unfortunately, I cannot reproduce the problem on my side. I used the latest version of Aspose.Words for testing. You can download the latest version from here: https://releases.aspose.com/words/java
With the latest version I can save your document into PDF format. So please try using the latest version of Aspose.Words for Java.
I’m actually working with maven 3. To insert Aspose’s libs into my repository I use only one jar , which is Aspose.Words.jdk16.jar. Is this correct according to you ?