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 key="login" encoding="&#x2713;" uri="" uuid="BA7F1D92-974B-11F0-84FF-8E3355FD9ABD" method="post">
    <field attrs="" display="Username" name="username" id="uuid-BA7F4ED4-974B-11F0-84FF-8E3355FD9ABD" key="username" widget="text" value=""/>
    <field name="password" display="Password" attrs="" widget="password" key="password" id="uuid-BA7F9484-974B-11F0-84FF-8E3355FD9ABD"/>
    <field attrs="" name="submit" display="Login" key="submit" id="uuid-BA7FE196-974B-11F0-84FF-8E3355FD9ABD" value="" widget="submit"/>
  </form>
</response>