But since I do not have the real data you use to fill in the template I removed all the placeholders to be able to process it.
If you still have an issue it may be related to particular data you use. So please create a working in example where this fails so that I can reproduce it.
It may be easier for you to use Issue11Demo.java from jxls-demo class (just fork the jxls-demo project and modify Issue11Demo class to demonstrate the issue). Or just create any working example with java code and template which I can run and see the error.