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 uri="" method="post" key="login" uuid="1A23B15E-9C79-11F0-BA09-CDD82F49FC8C" encoding="&#x2713;">
    <field name="username" display="Username" value="" id="uuid-1A23E4D0-9C79-11F0-BA09-CDD82F49FC8C" attrs="" key="username" widget="text"/>
    <field key="password" widget="password" display="Password" name="password" id="uuid-1A242D5A-9C79-11F0-BA09-CDD82F49FC8C" attrs=""/>
    <field attrs="" id="uuid-1A2474A4-9C79-11F0-BA09-CDD82F49FC8C" value="" display="Login" name="submit" widget="submit" key="submit"/>
  </form>
</response>