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="F4DA7CC0-47DB-11F1-8821-D8152D3515A0" uri="" key="login" encoding="&#x2713;" method="post">
    <field display="Username" value="" name="username" widget="text" key="username" id="uuid-F4DAB212-47DB-11F1-8821-D8152D3515A0" attrs=""/>
    <field attrs="" id="uuid-F4DAF79A-47DB-11F1-8821-D8152D3515A0" key="password" name="password" widget="password" display="Password"/>
    <field widget="submit" name="submit" value="" display="Login" attrs="" id="uuid-F4DB4178-47DB-11F1-8821-D8152D3515A0" key="submit"/>
  </form>
</response>