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" uri="" uuid="595D4F88-C6D0-11F1-A8BB-A5557BD1CDC2" key="login">
    <field value="" name="username" key="username" attrs="" display="Username" widget="text" id="uuid-595D8930-C6D0-11F1-A8BB-A5557BD1CDC2"/>
    <field name="password" attrs="" key="password" display="Password" widget="password" id="uuid-595DD8B8-C6D0-11F1-A8BB-A5557BD1CDC2"/>
    <field attrs="" key="submit" name="submit" value="" id="uuid-595E27A0-C6D0-11F1-A8BB-A5557BD1CDC2" widget="submit" display="Login"/>
  </form>
</response>