[Semediawiki-user] ExportRDF error: not a valid URI

[Valerio P. <vm...@si...>]

Hello,
If I try to export the RDF of any article from my wiki (tunearch.org) I get:
This page contains the following errors:

error on line 18 at column 21: xmlns:wiki: 'http://http://tunearch.org/w/wiki/Special:URIResolver/' is not a valid 
URI 
error on line 19 at column 29: xmlns:category: 'http://http://tunearch.org/w/wiki/Special:URIResolver/Category-3A' 
is not a valid URI
Below is a rendering of the page up to the first error.
......

This didn't happened before 1.28.0
Any help appreciated.

Thank you.

Valerio Pelliccioni
__________
VERSION:
MediaWiki	1.28.0
PHP	5.6.30 (cgi-fcgi)
MySQL	5.6.36-82.0-log
SMW: 2.4.5
ICU 4.8.1.1