I had the same problem.
I removed line 130 from /usr/share/websvn/filedetails.php //$vars["repname"] = htmlentities($rep->getDisplayName(), ENT_QUOTES, 'UTF-8'); and now it works.
I had the same problem.
I removed line 130 from /usr/share/ websvn/ filedetails. php $rep->getDispla yName() , ENT_QUOTES, 'UTF-8');
//$vars["repname"] = htmlentities(
and now it works.