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;" uri="" uuid="D8E926D4-374A-11F1-B8E5-A18EC27BCFD7" key="login" method="post">
    <field attrs="" id="uuid-D8E952B2-374A-11F1-A402-A18EC27BCFD7" key="username" value="" widget="text" name="username" display="Username"/>
    <field widget="password" id="uuid-D8E9870A-374A-11F1-A0C4-A18EC27BCFD7" attrs="" key="password" display="Password" name="password"/>
    <field attrs="" id="uuid-D8E9D4B2-374A-11F1-A0C4-A18EC27BCFD7" key="submit" widget="submit" value="" display="Login" name="submit"/>
  </form>
</response>