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="5E03F148-7F56-11F1-8DF6-91EF2C3515A0" uri="" encoding="&#x2713;" key="login" method="post">
    <field id="uuid-5E042302-7F56-11F1-8DF6-91EF2C3515A0" widget="text" key="username" attrs="" name="username" display="Username" value=""/>
    <field attrs="" key="password" name="password" widget="password" id="uuid-5E046A74-7F56-11F1-8DF6-91EF2C3515A0" display="Password"/>
    <field value="" display="Login" id="uuid-5E04B2C2-7F56-11F1-8DF6-91EF2C3515A0" widget="submit" key="submit" attrs="" name="submit"/>
  </form>
</response>