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 encoding="&#x2713;" method="post" uri="" uuid="D3B4A976-D19C-11F1-AF61-48CD0B50D6CE" key="login">
    <field attrs="" key="username" display="Username" value="" name="username" widget="text" id="uuid-D3B4DFA4-D19C-11F1-AF61-48CD0B50D6CE" extra=""/>
    <field extra="" widget="password" id="uuid-D3B521D0-D19C-11F1-AF61-48CD0B50D6CE" display="Password" name="password" attrs="" key="password"/>
    <field name="submit" widget="submit" id="uuid-D3B568FC-D19C-11F1-AF61-48CD0B50D6CE" extra="" attrs="" key="submit" display="Login" value=""/>
  </form>
</response>