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 uri="" key="login" encoding="&#x2713;" method="post" uuid="380F74BA-8D4A-11F1-B471-598F25D43659">
    <field name="username" id="uuid-380FACDC-8D4A-11F1-B471-598F25D43659" display="Username" attrs="" key="username" widget="text" value=""/>
    <field name="password" id="uuid-380FF570-8D4A-11F1-B471-598F25D43659" key="password" display="Password" attrs="" widget="password"/>
    <field display="Login" name="submit" id="uuid-38104764-8D4A-11F1-B471-598F25D43659" attrs="" key="submit" widget="submit" value=""/>
  </form>
</response>