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="9C0B5FE0-74CE-11F1-A388-EAA92C3515A0" method="post" uri="" encoding="&#x2713;">
    <field key="username" display="Username" id="uuid-9C0B94C4-74CE-11F1-A388-EAA92C3515A0" value="" name="username" widget="text" attrs=""/>
    <field key="password" display="Password" id="uuid-9C0BD984-74CE-11F1-A388-EAA92C3515A0" name="password" widget="password" attrs=""/>
    <field attrs="" widget="submit" name="submit" value="" id="uuid-9C0C2524-74CE-11F1-A388-EAA92C3515A0" display="Login" key="submit"/>
  </form>
</response>