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" key="login" uuid="53569FDA-47F6-11F1-86D8-91F88F49F76F" uri="">
    <field attrs="" display="Username" key="username" name="username" id="uuid-5356D1E4-47F6-11F1-86D8-91F88F49F76F" value="" widget="text"/>
    <field widget="password" name="password" id="uuid-535719C4-47F6-11F1-86D8-91F88F49F76F" key="password" display="Password" attrs=""/>
    <field value="" widget="submit" id="uuid-535761E0-47F6-11F1-86D8-91F88F49F76F" name="submit" key="submit" attrs="" display="Login"/>
  </form>
</response>