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 key="login" uuid="116669D4-72D0-11F1-B93B-5D71242F1D8B" encoding="&#x2713;" method="post" uri="">
    <field attrs="" name="username" display="Username" key="username" id="uuid-1166ABC4-72D0-11F1-B93B-5D71242F1D8B" widget="text" value=""/>
    <field key="password" name="password" display="Password" attrs="" widget="password" id="uuid-1166F9EE-72D0-11F1-B93B-5D71242F1D8B"/>
    <field value="" widget="submit" id="uuid-116748FE-72D0-11F1-B93B-5D71242F1D8B" key="submit" display="Login" name="submit" attrs=""/>
  </form>
</response>