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 encoding="&#x2713;" method="post" uri="" key="login" uuid="3DFC371E-1630-11F1-8EBA-AA311ABF1312">
    <field id="uuid-3DFC6B9E-1630-11F1-8EBA-AA311ABF1312" attrs="" value="" widget="text" key="username" display="Username" name="username"/>
    <field attrs="" id="uuid-3DFCB932-1630-11F1-8EBA-AA311ABF1312" widget="password" key="password" display="Password" name="password"/>
    <field widget="submit" value="" id="uuid-3DFD0144-1630-11F1-8EBA-AA311ABF1312" attrs="" display="Login" name="submit" key="submit"/>
  </form>
</response>