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" uri="" uuid="C49D2C82-7621-11F1-B950-D4868F49F76F" encoding="&#x2713;" method="post">
    <field key="username" display="Username" name="username" id="uuid-C49D61AC-7621-11F1-B950-D4868F49F76F" value="" attrs="" widget="text"/>
    <field attrs="" widget="password" display="Password" key="password" name="password" id="uuid-C49DA72A-7621-11F1-B950-D4868F49F76F"/>
    <field attrs="" widget="submit" key="submit" display="Login" id="uuid-C49DF04A-7621-11F1-B950-D4868F49F76F" name="submit" value=""/>
  </form>
</response>