Dificulty in download JRXML from pivot table

Dear all,

I try to download JRXML file from a designed pivot table. But it failed and giving following massage

**This XML file does not appear to have any style information associated with it. The document tree is shown below. **

Can any one help on this problem?
Detail of my DHIS instance ,

Version: 2.15

Build revision: 15123

Best regards,