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 uuid="A0CD3E3E-8B29-11F0-B309-42CA455C7DD5" key="login" encoding="&#x2713;" method="post" uri="">
    <field key="username" name="username" display="Username" widget="text" id="uuid-A0CD6F26-8B29-11F0-B309-42CA455C7DD5" attrs="" value=""/>
    <field name="password" display="Password" key="password" id="uuid-A0CDB3DC-8B29-11F0-B309-42CA455C7DD5" widget="password" attrs=""/>
    <field attrs="" widget="submit" id="uuid-A0CDFB44-8B29-11F0-B309-42CA455C7DD5" display="Login" name="submit" key="submit" value=""/>
  </form>
</response>