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="0176C4DA-87DC-11F1-B2F6-01477BD1CDC2" uri="" encoding="&#x2713;" key="login" method="post">
    <field display="Username" key="username" widget="text" id="uuid-0176F964-87DC-11F1-B2F6-01477BD1CDC2" name="username" value="" attrs=""/>
    <field display="Password" attrs="" name="password" widget="password" key="password" id="uuid-01774A86-87DC-11F1-B2F6-01477BD1CDC2"/>
    <field display="Login" value="" name="submit" attrs="" id="uuid-01779324-87DC-11F1-B2F6-01477BD1CDC2" key="submit" widget="submit"/>
  </form>
</response>