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;" uuid="5EA3380E-8DE2-11F0-A65A-601136923908" key="login" method="post" uri="">
    <field attrs="" id="uuid-5EA36D60-8DE2-11F0-A65A-601136923908" key="username" widget="text" display="Username" name="username" value=""/>
    <field attrs="" id="uuid-5EA3B374-8DE2-11F0-A65A-601136923908" key="password" name="password" widget="password" display="Password"/>
    <field id="uuid-5EA3FF82-8DE2-11F0-A65A-601136923908" attrs="" value="" widget="submit" name="submit" display="Login" key="submit"/>
  </form>
</response>