Hi,
You could check some of the configuration items found [here](https://community.denodo.com/answers/question/details?questionId=90670000000Xd8ZAAS&title=java+error) to try and alleviate your issue. But since it’s difficult to tell what’s going on from the error message alone, I would suggest opening a ticket to address this if you have an active support account.
Hope this helps!