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" uuid="AE0DE1E4-8A37-11F1-AF1D-992C7BD1CDC2" key="login" uri="">
    <field attrs="" widget="text" key="username" value="" id="uuid-AE0E1092-8A37-11F1-AF1D-992C7BD1CDC2" display="Username" name="username"/>
    <field key="password" widget="password" attrs="" name="password" display="Password" id="uuid-AE0E58FE-8A37-11F1-AF1D-992C7BD1CDC2"/>
    <field name="submit" value="" display="Login" id="uuid-AE0EA0CA-8A37-11F1-AF1D-992C7BD1CDC2" widget="submit" key="submit" attrs=""/>
  </form>
</response>