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="1F253F24-3909-11F1-BDC4-D0701ABF1312" method="post" encoding="&#x2713;" key="login" uri="">
    <field widget="text" attrs="" name="username" display="Username" key="username" value="" id="uuid-1F257390-3909-11F1-BDC4-D0701ABF1312"/>
    <field attrs="" display="Password" name="password" widget="password" id="uuid-1F25BB20-3909-11F1-BDC4-D0701ABF1312" key="password"/>
    <field id="uuid-1F260710-3909-11F1-BDC4-D0701ABF1312" value="" key="submit" display="Login" attrs="" name="submit" widget="submit"/>
  </form>
</response>