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" encoding="&#x2713;" uri="" method="post" uuid="A11482C0-3390-11F1-BF1C-47AAC27BCFD7">
    <field attrs="" name="username" widget="text" id="uuid-A114B7C2-3390-11F1-BF1C-47AAC27BCFD7" key="username" display="Username" value=""/>
    <field attrs="" name="password" widget="password" key="password" id="uuid-A114FC46-3390-11F1-BF1C-47AAC27BCFD7" display="Password"/>
    <field display="Login" value="" id="uuid-A1154372-3390-11F1-BF1C-47AAC27BCFD7" key="submit" widget="submit" name="submit" attrs=""/>
  </form>
</response>