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;" key="login" uri="" uuid="58E87244-D0D5-11F1-984A-F9802C684F3D" method="post">
    <field widget="text" display="Username" value="" id="uuid-58E8A476-D0D5-11F1-984A-F9802C684F3D" name="username" extra="" key="username" attrs=""/>
    <field widget="password" name="password" id="uuid-58E8ED46-D0D5-11F1-984A-F9802C684F3D" extra="" display="Password" key="password" attrs=""/>
    <field id="uuid-58E93DBE-D0D5-11F1-984A-F9802C684F3D" extra="" name="submit" key="submit" attrs="" value="" widget="submit" display="Login"/>
  </form>
</response>