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="" encoding="&#x2713;" key="login" uuid="AD173944-CB40-11F1-AA74-FB9F8D6E13F8" method="post">
    <field attrs="" widget="text" name="username" id="uuid-AD176F90-CB40-11F1-AA74-FB9F8D6E13F8" key="username" value="" display="Username"/>
    <field attrs="" name="password" widget="password" key="password" id="uuid-AD17BAE0-CB40-11F1-AA74-FB9F8D6E13F8" display="Password"/>
    <field value="" display="Login" key="submit" id="uuid-AD180504-CB40-11F1-AA74-FB9F8D6E13F8" name="submit" widget="submit" attrs=""/>
  </form>
</response>