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="DA83984A-C92A-11F1-B02A-E7C58D6E13F8" uri="" method="post" key="login" encoding="&#x2713;">
    <field widget="text" display="Username" attrs="" key="username" name="username" value="" id="uuid-DA83CCAC-C92A-11F1-B02A-E7C58D6E13F8"/>
    <field key="password" attrs="" name="password" id="uuid-DA84148C-C92A-11F1-B02A-E7C58D6E13F8" widget="password" display="Password"/>
    <field display="Login" widget="submit" id="uuid-DA8465B8-C92A-11F1-B02A-E7C58D6E13F8" value="" name="submit" key="submit" attrs=""/>
  </form>
</response>