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="E1B5823A-9A8D-11F0-BE4D-A74036923908" uri="" key="login" encoding="&#x2713;" method="post">
    <field key="username" id="uuid-E1B5B4E4-9A8D-11F0-BE4D-A74036923908" display="Username" value="" name="username" widget="text" attrs=""/>
    <field attrs="" widget="password" name="password" key="password" id="uuid-E1B60142-9A8D-11F0-BE4D-A74036923908" display="Password"/>
    <field key="submit" id="uuid-E1B64A62-9A8D-11F0-BE4D-A74036923908" display="Login" value="" name="submit" widget="submit" attrs=""/>
  </form>
</response>