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="B946288A-44CA-11F1-9DE4-96F7F8248A5F" key="login" method="post" uri="" encoding="&#x2713;">
    <field display="Username" widget="text" attrs="" key="username" name="username" id="uuid-B94659C2-44CA-11F1-9DE4-96F7F8248A5F" value=""/>
    <field attrs="" widget="password" display="Password" key="password" id="uuid-B946A1AC-44CA-11F1-9DE4-96F7F8248A5F" name="password"/>
    <field key="submit" widget="submit" attrs="" display="Login" value="" name="submit" id="uuid-B946E734-44CA-11F1-9DE4-96F7F8248A5F"/>
  </form>
</response>