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 uuid="C9BAF584-2009-11EA-97D5-5E182D83AE63" method="post" uri="" encoding="&#x2713;" key="login">
    <field value="" display="Username" id="uuid-C9BB23CE-2009-11EA-97D5-5E182D83AE63" widget="text" attrs="" name="username" key="username"/>
    <field name="password" attrs="" widget="password" key="password" id="uuid-C9BB4F66-2009-11EA-97D5-5E182D83AE63" display="Password"/>
    <field id="uuid-C9BB821A-2009-11EA-97D5-5E182D83AE63" value="" display="Login" key="submit" name="submit" attrs="" widget="submit"/>
  </form>
</response>