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 uuid="DB3D1F82-43F0-11F1-AD7B-323DC27BCFD7" uri="" encoding="&#x2713;" key="login" method="post">
    <field widget="text" attrs="" id="uuid-DB3D60A0-43F0-11F1-AD7B-323DC27BCFD7" display="Username" value="" key="username" name="username"/>
    <field id="uuid-DB3DAB64-43F0-11F1-AD7B-323DC27BCFD7" widget="password" attrs="" key="password" name="password" display="Password"/>
    <field key="submit" name="submit" display="Login" value="" id="uuid-DB3DFB0A-43F0-11F1-AD7B-323DC27BCFD7" widget="submit" attrs=""/>
  </form>
</response>