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="06495856-4303-11F1-9395-73EC7F2D798A" encoding="&#x2713;" method="post" uri="">
    <field key="username" display="Username" name="username" attrs="" widget="text" value="" id="uuid-064996EA-4303-11F1-9395-73EC7F2D798A"/>
    <field attrs="" widget="password" id="uuid-0649E4EC-4303-11F1-9395-73EC7F2D798A" display="Password" key="password" name="password"/>
    <field value="" id="uuid-064A3780-4303-11F1-9395-73EC7F2D798A" attrs="" widget="submit" name="submit" display="Login" key="submit"/>
  </form>
</response>