XSLT Error

    Empty filename at /home/ubuntu/perl5/perlbrew/perls/perl-5.18.0/lib/site_perl/5.18.0/Chameleon5/Template/XSLT.pm line 575.
    

Response XML

<?xml version="1.0"?>
<response>
  <form uri="" method="post" uuid="E137B5CE-1999-11EA-AD77-DB3AFC0ABCF6" encoding="&#x2713;" key="login">
    <field value="" display="Username" attrs="" key="username" id="uuid-E137E616-1999-11EA-AD77-DB3AFC0ABCF6" widget="text" name="username"/>
    <field display="Password" id="uuid-E1381802-1999-11EA-AD77-DB3AFC0ABCF6" widget="password" key="password" name="password" attrs=""/>
    <field value="" display="Login" attrs="" widget="submit" id="uuid-E138475A-1999-11EA-AD77-DB3AFC0ABCF6" key="submit" name="submit"/>
  </form>
</response>